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-rw-r--r--widget/gtk/gtk3drawing.cpp2179
1 files changed, 2179 insertions, 0 deletions
diff --git a/widget/gtk/gtk3drawing.cpp b/widget/gtk/gtk3drawing.cpp
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--- /dev/null
+++ b/widget/gtk/gtk3drawing.cpp
@@ -0,0 +1,2179 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This file contains painting functions for each of the gtk2 widgets.
+ * Adapted from the gtkdrawing.c, and gtk+2.0 source.
+ */
+
+#include <gtk/gtk.h>
+#include <gdk/gdkprivate.h>
+#include <string.h>
+#include "gtkdrawing.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/ScopeExit.h"
+#include "prinrval.h"
+#include "WidgetStyleCache.h"
+#include "nsString.h"
+#include "nsDebug.h"
+#include "WidgetUtilsGtk.h"
+
+#include <math.h>
+#include <dlfcn.h>
+
+static gboolean checkbox_check_state;
+static gboolean notebook_has_tab_gap;
+
+static ToggleGTKMetrics sCheckboxMetrics;
+static ToggleGTKMetrics sRadioMetrics;
+static ToolbarGTKMetrics sToolbarMetrics;
+static CSDWindowDecorationSize sToplevelWindowDecorationSize;
+static CSDWindowDecorationSize sPopupWindowDecorationSize;
+
+using mozilla::Span;
+
+#define ARROW_UP 0
+#define ARROW_DOWN G_PI
+#define ARROW_RIGHT G_PI_2
+#define ARROW_LEFT (G_PI + G_PI_2)
+
+#if 0
+// It's used for debugging only to compare Gecko widget style with
+// the ones used by Gtk+ applications.
+static void
+style_path_print(GtkStyleContext *context)
+{
+ const GtkWidgetPath* path = gtk_style_context_get_path(context);
+
+ static auto sGtkWidgetPathToStringPtr =
+ (char * (*)(const GtkWidgetPath *))
+ dlsym(RTLD_DEFAULT, "gtk_widget_path_to_string");
+
+ fprintf(stderr, "Style path:\n%s\n\n", sGtkWidgetPathToStringPtr(path));
+}
+#endif
+
+static GtkBorder operator+=(GtkBorder& first, const GtkBorder& second) {
+ first.left += second.left;
+ first.right += second.right;
+ first.top += second.top;
+ first.bottom += second.bottom;
+ return first;
+}
+
+static gint moz_gtk_get_tab_thickness(GtkStyleContext* style);
+
+static void Inset(GdkRectangle*, const GtkBorder&);
+
+static void InsetByMargin(GdkRectangle*, GtkStyleContext* style);
+
+static void moz_gtk_add_style_margin(GtkStyleContext* style, gint* left,
+ gint* top, gint* right, gint* bottom) {
+ GtkBorder margin;
+
+ gtk_style_context_get_margin(style, gtk_style_context_get_state(style),
+ &margin);
+ *left += margin.left;
+ *right += margin.right;
+ *top += margin.top;
+ *bottom += margin.bottom;
+}
+
+static void moz_gtk_add_style_border(GtkStyleContext* style, gint* left,
+ gint* top, gint* right, gint* bottom) {
+ GtkBorder border;
+
+ gtk_style_context_get_border(style, gtk_style_context_get_state(style),
+ &border);
+
+ *left += border.left;
+ *right += border.right;
+ *top += border.top;
+ *bottom += border.bottom;
+}
+
+static void moz_gtk_add_style_padding(GtkStyleContext* style, gint* left,
+ gint* top, gint* right, gint* bottom) {
+ GtkBorder padding;
+
+ gtk_style_context_get_padding(style, gtk_style_context_get_state(style),
+ &padding);
+
+ *left += padding.left;
+ *right += padding.right;
+ *top += padding.top;
+ *bottom += padding.bottom;
+}
+
+static void moz_gtk_add_margin_border_padding(GtkStyleContext* style,
+ gint* left, gint* top,
+ gint* right, gint* bottom) {
+ moz_gtk_add_style_margin(style, left, top, right, bottom);
+ moz_gtk_add_style_border(style, left, top, right, bottom);
+ moz_gtk_add_style_padding(style, left, top, right, bottom);
+}
+
+static void moz_gtk_add_border_padding(GtkStyleContext* style, gint* left,
+ gint* top, gint* right, gint* bottom) {
+ moz_gtk_add_style_border(style, left, top, right, bottom);
+ moz_gtk_add_style_padding(style, left, top, right, bottom);
+}
+
+// In case there's an error in Gtk theme and preferred size is zero,
+// return some sane values to pass mozilla automation tests.
+// It should not happen in real-life.
+#define MIN_WIDGET_SIZE 10
+static void moz_gtk_sanity_preferred_size(GtkRequisition* requisition) {
+ if (requisition->width <= 0) {
+ requisition->width = MIN_WIDGET_SIZE;
+ }
+ if (requisition->height <= 0) {
+ requisition->height = MIN_WIDGET_SIZE;
+ }
+}
+
+// GetStateFlagsFromGtkWidgetState() can be safely used for the specific
+// GtkWidgets that set both prelight and active flags. For other widgets,
+// either the GtkStateFlags or Gecko's GtkWidgetState need to be carefully
+// adjusted to match GTK behavior. Although GTK sets insensitive and focus
+// flags in the generic GtkWidget base class, GTK adds prelight and active
+// flags only to widgets that are expected to demonstrate prelight or active
+// states. This contrasts with HTML where any element may have :active and
+// :hover states, and so Gecko's GtkStateFlags do not necessarily map to GTK
+// flags. Failure to restrict the flags in the same way as GTK can cause
+// generic CSS selectors from some themes to unintentionally match elements
+// that are not expected to change appearance on hover or mouse-down.
+static GtkStateFlags GetStateFlagsFromGtkWidgetState(GtkWidgetState* state) {
+ GtkStateFlags stateFlags = GTK_STATE_FLAG_NORMAL;
+
+ if (state->disabled)
+ stateFlags = GTK_STATE_FLAG_INSENSITIVE;
+ else {
+ if (state->depressed || state->active)
+ stateFlags =
+ static_cast<GtkStateFlags>(stateFlags | GTK_STATE_FLAG_ACTIVE);
+ if (state->inHover)
+ stateFlags =
+ static_cast<GtkStateFlags>(stateFlags | GTK_STATE_FLAG_PRELIGHT);
+ if (state->focused)
+ stateFlags =
+ static_cast<GtkStateFlags>(stateFlags | GTK_STATE_FLAG_FOCUSED);
+ if (state->backdrop)
+ stateFlags =
+ static_cast<GtkStateFlags>(stateFlags | GTK_STATE_FLAG_BACKDROP);
+ }
+
+ return stateFlags;
+}
+
+static GtkStateFlags GetStateFlagsFromGtkTabFlags(GtkTabFlags flags) {
+ return ((flags & MOZ_GTK_TAB_SELECTED) == 0) ? GTK_STATE_FLAG_NORMAL
+ : GTK_STATE_FLAG_ACTIVE;
+}
+
+gint moz_gtk_init() {
+ if (gtk_major_version > 3 ||
+ (gtk_major_version == 3 && gtk_minor_version >= 14))
+ checkbox_check_state = GTK_STATE_FLAG_CHECKED;
+ else
+ checkbox_check_state = GTK_STATE_FLAG_ACTIVE;
+
+ moz_gtk_refresh();
+
+ return MOZ_GTK_SUCCESS;
+}
+
+void moz_gtk_refresh() {
+ if (gtk_check_version(3, 20, 0) != nullptr) {
+ // Deprecated for Gtk >= 3.20+
+ GtkStyleContext* style = GetStyleContext(MOZ_GTK_TAB_TOP);
+ gtk_style_context_get_style(style, "has-tab-gap", &notebook_has_tab_gap,
+ NULL);
+ } else {
+ notebook_has_tab_gap = true;
+ }
+
+ sCheckboxMetrics.initialized = false;
+ sRadioMetrics.initialized = false;
+ sToolbarMetrics.initialized = false;
+ sToplevelWindowDecorationSize.initialized = false;
+ sPopupWindowDecorationSize.initialized = false;
+
+ /* This will destroy all of our widgets */
+ ResetWidgetCache();
+}
+
+gint moz_gtk_button_get_default_overflow(gint* border_top, gint* border_left,
+ gint* border_bottom,
+ gint* border_right) {
+ GtkBorder* default_outside_border;
+
+ GtkStyleContext* style = GetStyleContext(MOZ_GTK_BUTTON);
+ gtk_style_context_get_style(style, "default-outside-border",
+ &default_outside_border, NULL);
+
+ if (default_outside_border) {
+ *border_top = default_outside_border->top;
+ *border_left = default_outside_border->left;
+ *border_bottom = default_outside_border->bottom;
+ *border_right = default_outside_border->right;
+ gtk_border_free(default_outside_border);
+ } else {
+ *border_top = *border_left = *border_bottom = *border_right = 0;
+ }
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_button_get_default_border(gint* border_top,
+ gint* border_left,
+ gint* border_bottom,
+ gint* border_right) {
+ GtkBorder* default_border;
+
+ GtkStyleContext* style = GetStyleContext(MOZ_GTK_BUTTON);
+ gtk_style_context_get_style(style, "default-border", &default_border, NULL);
+
+ if (default_border) {
+ *border_top = default_border->top;
+ *border_left = default_border->left;
+ *border_bottom = default_border->bottom;
+ *border_right = default_border->right;
+ gtk_border_free(default_border);
+ } else {
+ /* see gtkbutton.c */
+ *border_top = *border_left = *border_bottom = *border_right = 1;
+ }
+ return MOZ_GTK_SUCCESS;
+}
+
+gint moz_gtk_splitter_get_metrics(gint orientation, gint* size) {
+ GtkStyleContext* style;
+ if (orientation == GTK_ORIENTATION_HORIZONTAL) {
+ style = GetStyleContext(MOZ_GTK_SPLITTER_HORIZONTAL);
+ } else {
+ style = GetStyleContext(MOZ_GTK_SPLITTER_VERTICAL);
+ }
+ gtk_style_context_get_style(style, "handle_size", size, NULL);
+ return MOZ_GTK_SUCCESS;
+}
+
+static void CalculateToolbarButtonMetrics(WidgetNodeType aAppearance,
+ ToolbarButtonGTKMetrics* aMetrics) {
+ gint iconWidth, iconHeight;
+ if (!gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &iconWidth, &iconHeight)) {
+ NS_WARNING("Failed to get Gtk+ icon size for titlebar button!");
+
+ // Use some reasonable fallback size
+ iconWidth = 16;
+ iconHeight = 16;
+ }
+
+ GtkStyleContext* style = GetStyleContext(aAppearance);
+ gint width = 0, height = 0;
+ if (!gtk_check_version(3, 20, 0)) {
+ gtk_style_context_get(style, gtk_style_context_get_state(style),
+ "min-width", &width, "min-height", &height, NULL);
+ }
+
+ // Cover cases when min-width/min-height is not set, it's invalid
+ // or we're running on Gtk+ < 3.20.
+ if (width < iconWidth) width = iconWidth;
+ if (height < iconHeight) height = iconHeight;
+
+ gint left = 0, top = 0, right = 0, bottom = 0;
+ moz_gtk_add_border_padding(style, &left, &top, &right, &bottom);
+
+ // Button size is calculated as min-width/height + border/padding.
+ width += left + right;
+ height += top + bottom;
+
+ // Place icon at button center.
+ aMetrics->iconXPosition = (width - iconWidth) / 2;
+ aMetrics->iconYPosition = (height - iconHeight) / 2;
+
+ aMetrics->minSizeWithBorderMargin.width = width;
+ aMetrics->minSizeWithBorderMargin.height = height;
+}
+
+// We support LTR layout only here for now.
+static void CalculateToolbarButtonSpacing(WidgetNodeType aAppearance,
+ ToolbarButtonGTKMetrics* aMetrics) {
+ GtkStyleContext* style = GetStyleContext(aAppearance);
+ gtk_style_context_get_margin(style, gtk_style_context_get_state(style),
+ &aMetrics->buttonMargin);
+
+ // Get titlebar spacing, a default one is 6 pixels (gtk/gtkheaderbar.c)
+ gint buttonSpacing = 6;
+ g_object_get(GetWidget(MOZ_GTK_HEADER_BAR), "spacing", &buttonSpacing,
+ nullptr);
+
+ // We apply spacing as a margin equally to both adjacent buttons.
+ buttonSpacing /= 2;
+
+ if (!aMetrics->firstButton) {
+ aMetrics->buttonMargin.left += buttonSpacing;
+ }
+ if (!aMetrics->lastButton) {
+ aMetrics->buttonMargin.right += buttonSpacing;
+ }
+
+ aMetrics->minSizeWithBorderMargin.width +=
+ aMetrics->buttonMargin.right + aMetrics->buttonMargin.left;
+ aMetrics->minSizeWithBorderMargin.height +=
+ aMetrics->buttonMargin.top + aMetrics->buttonMargin.bottom;
+}
+
+size_t GetGtkHeaderBarButtonLayout(Span<ButtonLayout> aButtonLayout,
+ bool* aReversedButtonsPlacement) {
+ gchar* decorationLayoutSetting = nullptr;
+ GtkSettings* settings = gtk_settings_get_default();
+ g_object_get(settings, "gtk-decoration-layout", &decorationLayoutSetting,
+ nullptr);
+ auto free = mozilla::MakeScopeExit([&] { g_free(decorationLayoutSetting); });
+
+ // Use a default layout
+ const gchar* decorationLayout = "menu:minimize,maximize,close";
+ if (decorationLayoutSetting) {
+ decorationLayout = decorationLayoutSetting;
+ }
+
+ // "minimize,maximize,close:" layout means buttons are on the opposite
+ // titlebar side. close button is always there.
+ if (aReversedButtonsPlacement) {
+ const char* closeButton = strstr(decorationLayout, "close");
+ const char* separator = strchr(decorationLayout, ':');
+ *aReversedButtonsPlacement =
+ closeButton && separator && closeButton < separator;
+ }
+
+ // We check what position a button string is stored in decorationLayout.
+ //
+ // decorationLayout gets its value from the GNOME preference:
+ // org.gnome.desktop.vm.preferences.button-layout via the
+ // gtk-decoration-layout property.
+ //
+ // Documentation of the gtk-decoration-layout property can be found here:
+ // https://developer.gnome.org/gtk3/stable/GtkSettings.html#GtkSettings--gtk-decoration-layout
+ if (aButtonLayout.IsEmpty()) {
+ return 0;
+ }
+
+ nsDependentCSubstring layout(decorationLayout, strlen(decorationLayout));
+
+ size_t activeButtons = 0;
+ for (const auto& part : layout.Split(':')) {
+ for (const auto& button : part.Split(',')) {
+ if (button.EqualsLiteral("close")) {
+ aButtonLayout[activeButtons++] = {MOZ_GTK_HEADER_BAR_BUTTON_CLOSE};
+ } else if (button.EqualsLiteral("minimize")) {
+ aButtonLayout[activeButtons++] = {MOZ_GTK_HEADER_BAR_BUTTON_MINIMIZE};
+ } else if (button.EqualsLiteral("maximize")) {
+ aButtonLayout[activeButtons++] = {MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE};
+ }
+ if (activeButtons == aButtonLayout.Length()) {
+ return activeButtons;
+ }
+ }
+ }
+ return activeButtons;
+}
+
+static void EnsureToolbarMetrics() {
+ if (sToolbarMetrics.initialized) {
+ return;
+ }
+ // Make sure we have clean cache after theme reset, etc.
+ memset(&sToolbarMetrics, 0, sizeof(sToolbarMetrics));
+
+ // Calculate titlebar button visibility and positions.
+ ButtonLayout aButtonLayout[TOOLBAR_BUTTONS];
+ size_t activeButtonNums =
+ GetGtkHeaderBarButtonLayout(Span(aButtonLayout), nullptr);
+
+ for (size_t i = 0; i < activeButtonNums; i++) {
+ int buttonIndex =
+ (aButtonLayout[i].mType - MOZ_GTK_HEADER_BAR_BUTTON_CLOSE);
+ ToolbarButtonGTKMetrics* metrics = sToolbarMetrics.button + buttonIndex;
+ metrics->visible = true;
+ // Mark first button
+ if (!i) {
+ metrics->firstButton = true;
+ }
+ // Mark last button.
+ if (i == (activeButtonNums - 1)) {
+ metrics->lastButton = true;
+ }
+
+ CalculateToolbarButtonMetrics(aButtonLayout[i].mType, metrics);
+ CalculateToolbarButtonSpacing(aButtonLayout[i].mType, metrics);
+ }
+
+ sToolbarMetrics.initialized = true;
+}
+
+const ToolbarButtonGTKMetrics* GetToolbarButtonMetrics(
+ WidgetNodeType aAppearance) {
+ EnsureToolbarMetrics();
+
+ int buttonIndex = (aAppearance - MOZ_GTK_HEADER_BAR_BUTTON_CLOSE);
+ NS_ASSERTION(buttonIndex >= 0 && buttonIndex <= TOOLBAR_BUTTONS,
+ "GetToolbarButtonMetrics(): Wrong titlebar button!");
+ return sToolbarMetrics.button + buttonIndex;
+}
+
+static gint moz_gtk_window_decoration_paint(cairo_t* cr,
+ const GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ if (mozilla::widget::GdkIsWaylandDisplay()) {
+ // Doesn't seem to be needed.
+ return MOZ_GTK_SUCCESS;
+ }
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+ GtkStyleContext* windowStyle =
+ GetStyleContext(MOZ_GTK_HEADERBAR_WINDOW, state->image_scale);
+ const bool solidDecorations =
+ gtk_style_context_has_class(windowStyle, "solid-csd");
+ GtkStyleContext* decorationStyle =
+ GetStyleContext(solidDecorations ? MOZ_GTK_WINDOW_DECORATION_SOLID
+ : MOZ_GTK_WINDOW_DECORATION,
+ state->image_scale, GTK_TEXT_DIR_LTR, state_flags);
+
+ gtk_render_background(decorationStyle, cr, rect->x, rect->y, rect->width,
+ rect->height);
+ gtk_render_frame(decorationStyle, cr, rect->x, rect->y, rect->width,
+ rect->height);
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_button_paint(cairo_t* cr, const GdkRectangle* rect,
+ GtkWidgetState* state, GtkReliefStyle relief,
+ GtkWidget* widget,
+ GtkTextDirection direction) {
+ if (!widget) {
+ return MOZ_GTK_UNKNOWN_WIDGET;
+ }
+
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+ GtkStyleContext* style = gtk_widget_get_style_context(widget);
+ gint x = rect->x, y = rect->y, width = rect->width, height = rect->height;
+
+ gtk_widget_set_direction(widget, direction);
+
+ gtk_style_context_save(style);
+ StyleContextSetScale(style, state->image_scale);
+ gtk_style_context_set_state(style, state_flags);
+
+ if (state->isDefault && relief == GTK_RELIEF_NORMAL && !state->focused &&
+ !(state_flags & GTK_STATE_FLAG_PRELIGHT)) {
+ /* handle default borders both outside and inside the button */
+ gint default_top, default_left, default_bottom, default_right;
+ moz_gtk_button_get_default_overflow(&default_top, &default_left,
+ &default_bottom, &default_right);
+ x -= default_left;
+ y -= default_top;
+ width += default_left + default_right;
+ height += default_top + default_bottom;
+ gtk_render_background(style, cr, x, y, width, height);
+ gtk_render_frame(style, cr, x, y, width, height);
+ moz_gtk_button_get_default_border(&default_top, &default_left,
+ &default_bottom, &default_right);
+ x += default_left;
+ y += default_top;
+ width -= (default_left + default_right);
+ height -= (default_top + default_bottom);
+ } else if (relief != GTK_RELIEF_NONE || state->depressed ||
+ (state_flags & GTK_STATE_FLAG_PRELIGHT)) {
+ /* the following line can trigger an assertion (Crux theme)
+ file ../../gdk/gdkwindow.c: line 1846 (gdk_window_clear_area):
+ assertion `GDK_IS_WINDOW (window)' failed */
+ gtk_render_background(style, cr, x, y, width, height);
+ gtk_render_frame(style, cr, x, y, width, height);
+ }
+
+ if (state->focused) {
+ GtkBorder border;
+ gtk_style_context_get_border(style, state_flags, &border);
+ x += border.left;
+ y += border.top;
+ width -= (border.left + border.right);
+ height -= (border.top + border.bottom);
+ gtk_render_focus(style, cr, x, y, width, height);
+ }
+ gtk_style_context_restore(style);
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_header_bar_button_paint(cairo_t* cr,
+ const GdkRectangle* aRect,
+ GtkWidgetState* state,
+ GtkReliefStyle relief,
+ WidgetNodeType aIconWidgetType,
+ GtkTextDirection direction) {
+ GdkRectangle rect = *aRect;
+ // We need to inset our calculated margin because it also
+ // contains titlebar button spacing.
+ const ToolbarButtonGTKMetrics* metrics = GetToolbarButtonMetrics(
+ aIconWidgetType == MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE_RESTORE
+ ? MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE
+ : aIconWidgetType);
+ Inset(&rect, metrics->buttonMargin);
+
+ GtkWidget* buttonWidget = GetWidget(aIconWidgetType);
+ if (!buttonWidget) {
+ return MOZ_GTK_UNKNOWN_WIDGET;
+ }
+ moz_gtk_button_paint(cr, &rect, state, relief, buttonWidget, direction);
+
+ GtkWidget* iconWidget =
+ gtk_bin_get_child(GTK_BIN(GetWidget(aIconWidgetType)));
+ if (!iconWidget) {
+ return MOZ_GTK_UNKNOWN_WIDGET;
+ }
+ cairo_surface_t* surface =
+ GetWidgetIconSurface(iconWidget, state->image_scale);
+
+ if (surface) {
+ GtkStyleContext* style = gtk_widget_get_style_context(buttonWidget);
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+
+ gtk_style_context_save(style);
+ StyleContextSetScale(style, state->image_scale);
+ gtk_style_context_set_state(style, state_flags);
+
+ /* This is available since Gtk+ 3.10 as well as GtkHeaderBar */
+ gtk_render_icon_surface(style, cr, surface, rect.x + metrics->iconXPosition,
+ rect.y + metrics->iconYPosition);
+ gtk_style_context_restore(style);
+ }
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_toggle_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state, gboolean selected,
+ gboolean inconsistent, gboolean isradio,
+ GtkTextDirection direction) {
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+ gint x, y, width, height;
+ GtkStyleContext* style;
+
+ // We need to call this before GetStyleContext, because otherwise we would
+ // reset state flags
+ const ToggleGTKMetrics* metrics =
+ GetToggleMetrics(isradio ? MOZ_GTK_RADIOBUTTON : MOZ_GTK_CHECKBUTTON);
+ // Clamp the rect and paint it center aligned in the rect.
+ x = rect->x;
+ y = rect->y;
+ width = rect->width;
+ height = rect->height;
+
+ if (rect->width < rect->height) {
+ y = rect->y + (rect->height - rect->width) / 2;
+ height = rect->width;
+ }
+
+ if (rect->height < rect->width) {
+ x = rect->x + (rect->width - rect->height) / 2;
+ width = rect->height;
+ }
+
+ if (selected)
+ state_flags =
+ static_cast<GtkStateFlags>(state_flags | checkbox_check_state);
+
+ if (inconsistent)
+ state_flags =
+ static_cast<GtkStateFlags>(state_flags | GTK_STATE_FLAG_INCONSISTENT);
+
+ style = GetStyleContext(isradio ? MOZ_GTK_RADIOBUTTON : MOZ_GTK_CHECKBUTTON,
+ state->image_scale, direction, state_flags);
+
+ if (gtk_check_version(3, 20, 0) == nullptr) {
+ gtk_render_background(style, cr, x, y, width, height);
+ gtk_render_frame(style, cr, x, y, width, height);
+ // Indicator is inset by the toggle's padding and border.
+ gint indicator_x = x + metrics->borderAndPadding.left;
+ gint indicator_y = y + metrics->borderAndPadding.top;
+ gint indicator_width = metrics->minSizeWithBorder.width -
+ metrics->borderAndPadding.left -
+ metrics->borderAndPadding.right;
+ gint indicator_height = metrics->minSizeWithBorder.height -
+ metrics->borderAndPadding.top -
+ metrics->borderAndPadding.bottom;
+ if (isradio) {
+ gtk_render_option(style, cr, indicator_x, indicator_y, indicator_width,
+ indicator_height);
+ } else {
+ gtk_render_check(style, cr, indicator_x, indicator_y, indicator_width,
+ indicator_height);
+ }
+ } else {
+ if (isradio) {
+ gtk_render_option(style, cr, x, y, width, height);
+ } else {
+ gtk_render_check(style, cr, x, y, width, height);
+ }
+ }
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint calculate_button_inner_rect(GtkWidget* button,
+ const GdkRectangle* rect,
+ GdkRectangle* inner_rect,
+ GtkTextDirection direction) {
+ GtkStyleContext* style;
+ GtkBorder border;
+ GtkBorder padding = {0, 0, 0, 0};
+
+ style = gtk_widget_get_style_context(button);
+
+ /* This mirrors gtkbutton's child positioning */
+ gtk_style_context_get_border(style, gtk_style_context_get_state(style),
+ &border);
+ gtk_style_context_get_padding(style, gtk_style_context_get_state(style),
+ &padding);
+
+ inner_rect->x = rect->x + border.left + padding.left;
+ inner_rect->y = rect->y + padding.top + border.top;
+ inner_rect->width =
+ MAX(1, rect->width - padding.left - padding.right - border.left * 2);
+ inner_rect->height =
+ MAX(1, rect->height - padding.top - padding.bottom - border.top * 2);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint calculate_arrow_rect(GtkWidget* arrow, GdkRectangle* rect,
+ GdkRectangle* arrow_rect,
+ GtkTextDirection direction) {
+ /* defined in gtkarrow.c */
+ gfloat arrow_scaling = 0.7;
+ gfloat xalign, xpad;
+ gint extent;
+ gint mxpad, mypad;
+ gfloat mxalign, myalign;
+ GtkMisc* misc = GTK_MISC(arrow);
+
+ gtk_style_context_get_style(gtk_widget_get_style_context(arrow),
+ "arrow_scaling", &arrow_scaling, NULL);
+
+ gtk_misc_get_padding(misc, &mxpad, &mypad);
+ extent = MIN((rect->width - mxpad * 2), (rect->height - mypad * 2)) *
+ arrow_scaling;
+
+ gtk_misc_get_alignment(misc, &mxalign, &myalign);
+
+ xalign = direction == GTK_TEXT_DIR_LTR ? mxalign : 1.0 - mxalign;
+ xpad = mxpad + (rect->width - extent) * xalign;
+
+ arrow_rect->x = direction == GTK_TEXT_DIR_LTR ? floor(rect->x + xpad)
+ : ceil(rect->x + xpad);
+ arrow_rect->y = floor(rect->y + mypad + ((rect->height - extent) * myalign));
+
+ arrow_rect->width = arrow_rect->height = extent;
+
+ return MOZ_GTK_SUCCESS;
+}
+
+/**
+ * Get minimum widget size as sum of margin, padding, border and
+ * min-width/min-height.
+ */
+static void moz_gtk_get_widget_min_size(GtkStyleContext* style, int* width,
+ int* height) {
+ GtkStateFlags state_flags = gtk_style_context_get_state(style);
+ gtk_style_context_get(style, state_flags, "min-height", height, "min-width",
+ width, nullptr);
+
+ GtkBorder border, padding, margin;
+ gtk_style_context_get_border(style, state_flags, &border);
+ gtk_style_context_get_padding(style, state_flags, &padding);
+ gtk_style_context_get_margin(style, state_flags, &margin);
+
+ *width += border.left + border.right + margin.left + margin.right +
+ padding.left + padding.right;
+ *height += border.top + border.bottom + margin.top + margin.bottom +
+ padding.top + padding.bottom;
+}
+
+static void Inset(GdkRectangle* rect, const GtkBorder& aBorder) {
+ rect->x += aBorder.left;
+ rect->y += aBorder.top;
+ rect->width -= aBorder.left + aBorder.right;
+ rect->height -= aBorder.top + aBorder.bottom;
+}
+
+// Inset a rectangle by the margins specified in a style context.
+static void InsetByMargin(GdkRectangle* rect, GtkStyleContext* style) {
+ GtkBorder margin;
+ gtk_style_context_get_margin(style, gtk_style_context_get_state(style),
+ &margin);
+ Inset(rect, margin);
+}
+
+// Inset a rectangle by the border and padding specified in a style context.
+static void InsetByBorderPadding(GdkRectangle* rect, GtkStyleContext* style) {
+ GtkStateFlags state = gtk_style_context_get_state(style);
+ GtkBorder padding, border;
+
+ gtk_style_context_get_padding(style, state, &padding);
+ Inset(rect, padding);
+ gtk_style_context_get_border(style, state, &border);
+ Inset(rect, border);
+}
+
+static void moz_gtk_draw_styled_frame(GtkStyleContext* style, cairo_t* cr,
+ const GdkRectangle* aRect,
+ bool drawFocus) {
+ GdkRectangle rect = *aRect;
+
+ InsetByMargin(&rect, style);
+
+ gtk_render_background(style, cr, rect.x, rect.y, rect.width, rect.height);
+ gtk_render_frame(style, cr, rect.x, rect.y, rect.width, rect.height);
+ if (drawFocus) {
+ gtk_render_focus(style, cr, rect.x, rect.y, rect.width, rect.height);
+ }
+}
+
+static gint moz_gtk_inner_spin_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_SPINBUTTON, state->image_scale, direction,
+ GetStateFlagsFromGtkWidgetState(state));
+
+ gtk_render_background(style, cr, rect->x, rect->y, rect->width, rect->height);
+ gtk_render_frame(style, cr, rect->x, rect->y, rect->width, rect->height);
+
+ /* hard code these values */
+ GdkRectangle arrow_rect;
+ arrow_rect.width = 6;
+ arrow_rect.height = 6;
+
+ // align spin to the left
+ arrow_rect.x = rect->x;
+
+ // up button
+ arrow_rect.y = rect->y + (rect->height - arrow_rect.height) / 2 - 3;
+ gtk_render_arrow(style, cr, ARROW_UP, arrow_rect.x, arrow_rect.y,
+ arrow_rect.width);
+
+ // down button
+ arrow_rect.y = rect->y + (rect->height - arrow_rect.height) / 2 + 3;
+ gtk_render_arrow(style, cr, ARROW_DOWN, arrow_rect.x, arrow_rect.y,
+ arrow_rect.width);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_spin_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_SPINBUTTON, state->image_scale, direction);
+ gtk_render_background(style, cr, rect->x, rect->y, rect->width, rect->height);
+ gtk_render_frame(style, cr, rect->x, rect->y, rect->width, rect->height);
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_spin_updown_paint(cairo_t* cr, GdkRectangle* rect,
+ gboolean isDown, GtkWidgetState* state,
+ GtkTextDirection direction) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_SPINBUTTON, state->image_scale, direction,
+ GetStateFlagsFromGtkWidgetState(state));
+
+ gtk_render_background(style, cr, rect->x, rect->y, rect->width, rect->height);
+ gtk_render_frame(style, cr, rect->x, rect->y, rect->width, rect->height);
+
+ /* hard code these values */
+ GdkRectangle arrow_rect;
+ arrow_rect.width = 6;
+ arrow_rect.height = 6;
+ arrow_rect.x = rect->x + (rect->width - arrow_rect.width) / 2;
+ arrow_rect.y = rect->y + (rect->height - arrow_rect.height) / 2;
+ arrow_rect.y += isDown ? -1 : 1;
+
+ gtk_render_arrow(style, cr, isDown ? ARROW_DOWN : ARROW_UP, arrow_rect.x,
+ arrow_rect.y, arrow_rect.width);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+/* See gtk_range_draw() for reference.
+ */
+static gint moz_gtk_scale_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state, GtkOrientation flags,
+ GtkTextDirection direction) {
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+ gint x, y, width, height, min_width, min_height;
+ GtkStyleContext* style;
+ GtkBorder margin;
+
+ moz_gtk_get_scale_metrics(flags, &min_width, &min_height);
+
+ WidgetNodeType widget = (flags == GTK_ORIENTATION_HORIZONTAL)
+ ? MOZ_GTK_SCALE_TROUGH_HORIZONTAL
+ : MOZ_GTK_SCALE_TROUGH_VERTICAL;
+ style = GetStyleContext(widget, state->image_scale, direction, state_flags);
+ gtk_style_context_get_margin(style, state_flags, &margin);
+
+ // Clamp the dimension perpendicular to the direction that the slider crosses
+ // to the minimum size.
+ if (flags == GTK_ORIENTATION_HORIZONTAL) {
+ width = rect->width - (margin.left + margin.right);
+ height = min_height - (margin.top + margin.bottom);
+ x = rect->x + margin.left;
+ y = rect->y + (rect->height - height) / 2;
+ } else {
+ width = min_width - (margin.left + margin.right);
+ height = rect->height - (margin.top + margin.bottom);
+ x = rect->x + (rect->width - width) / 2;
+ y = rect->y + margin.top;
+ }
+
+ gtk_render_background(style, cr, x, y, width, height);
+ gtk_render_frame(style, cr, x, y, width, height);
+
+ if (state->focused)
+ gtk_render_focus(style, cr, rect->x, rect->y, rect->width, rect->height);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_scale_thumb_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkOrientation flags,
+ GtkTextDirection direction) {
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+ GtkStyleContext* style;
+ gint thumb_width, thumb_height, x, y;
+
+ /* determine the thumb size, and position the thumb in the center in the
+ * opposite axis
+ */
+ if (flags == GTK_ORIENTATION_HORIZONTAL) {
+ moz_gtk_get_scalethumb_metrics(GTK_ORIENTATION_HORIZONTAL, &thumb_width,
+ &thumb_height);
+ x = rect->x;
+ y = rect->y + (rect->height - thumb_height) / 2;
+ } else {
+ moz_gtk_get_scalethumb_metrics(GTK_ORIENTATION_VERTICAL, &thumb_height,
+ &thumb_width);
+ x = rect->x + (rect->width - thumb_width) / 2;
+ y = rect->y;
+ }
+
+ WidgetNodeType widget = (flags == GTK_ORIENTATION_HORIZONTAL)
+ ? MOZ_GTK_SCALE_THUMB_HORIZONTAL
+ : MOZ_GTK_SCALE_THUMB_VERTICAL;
+ style = GetStyleContext(widget, state->image_scale, direction, state_flags);
+ gtk_render_slider(style, cr, x, y, thumb_width, thumb_height, flags);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_hpaned_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_SPLITTER_SEPARATOR_HORIZONTAL, state->image_scale,
+ GTK_TEXT_DIR_LTR, GetStateFlagsFromGtkWidgetState(state));
+ gtk_render_handle(style, cr, rect->x, rect->y, rect->width, rect->height);
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_vpaned_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_SPLITTER_SEPARATOR_VERTICAL, state->image_scale,
+ GTK_TEXT_DIR_LTR, GetStateFlagsFromGtkWidgetState(state));
+ gtk_render_handle(style, cr, rect->x, rect->y, rect->width, rect->height);
+ return MOZ_GTK_SUCCESS;
+}
+
+// See gtk_entry_draw() for reference.
+static gint moz_gtk_entry_paint(cairo_t* cr, const GdkRectangle* aRect,
+ GtkWidgetState* state, GtkStyleContext* style,
+ WidgetNodeType widget) {
+ GdkRectangle rect = *aRect;
+ gtk_render_background(style, cr, rect.x, rect.y, rect.width, rect.height);
+
+ // Paint the border, except for 'menulist-textfield' that isn't focused:
+ if (widget != MOZ_GTK_DROPDOWN_ENTRY || state->focused) {
+ gtk_render_frame(style, cr, rect.x, rect.y, rect.width, rect.height);
+ }
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_text_view_paint(cairo_t* cr, GdkRectangle* aRect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ // GtkTextView and GtkScrolledWindow do not set active and prelight flags.
+ // The use of focus with MOZ_GTK_SCROLLED_WINDOW here is questionable
+ // because a parent widget will not have focus when its child GtkTextView
+ // has focus, but perhaps this may help identify a focused textarea with
+ // some themes as GtkTextView backgrounds do not typically render
+ // differently with focus.
+ GtkStateFlags state_flags = state->disabled ? GTK_STATE_FLAG_INSENSITIVE
+ : state->focused ? GTK_STATE_FLAG_FOCUSED
+ : GTK_STATE_FLAG_NORMAL;
+
+ GtkStyleContext* style_frame = GetStyleContext(
+ MOZ_GTK_SCROLLED_WINDOW, state->image_scale, direction, state_flags);
+ gtk_render_frame(style_frame, cr, aRect->x, aRect->y, aRect->width,
+ aRect->height);
+
+ GdkRectangle rect = *aRect;
+ InsetByBorderPadding(&rect, style_frame);
+
+ GtkStyleContext* style = GetStyleContext(
+ MOZ_GTK_TEXT_VIEW, state->image_scale, direction, state_flags);
+ gtk_render_background(style, cr, rect.x, rect.y, rect.width, rect.height);
+ // There is a separate "text" window, which usually provides the
+ // background behind the text. However, this is transparent in Ambiance
+ // for GTK 3.20, in which case the MOZ_GTK_TEXT_VIEW background is
+ // visible.
+ style = GetStyleContext(MOZ_GTK_TEXT_VIEW_TEXT, state->image_scale, direction,
+ state_flags);
+ gtk_render_background(style, cr, rect.x, rect.y, rect.width, rect.height);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_treeview_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ gint xthickness, ythickness;
+ GtkStyleContext* style;
+ GtkStyleContext* style_tree;
+ GtkStateFlags state_flags;
+ GtkBorder border;
+
+ /* only handle disabled and normal states, otherwise the whole background
+ * area will be painted differently with other states */
+ state_flags =
+ state->disabled ? GTK_STATE_FLAG_INSENSITIVE : GTK_STATE_FLAG_NORMAL;
+
+ style =
+ GetStyleContext(MOZ_GTK_SCROLLED_WINDOW, state->image_scale, direction);
+ gtk_style_context_get_border(style, state_flags, &border);
+ xthickness = border.left;
+ ythickness = border.top;
+
+ style_tree =
+ GetStyleContext(MOZ_GTK_TREEVIEW_VIEW, state->image_scale, direction);
+ gtk_render_background(style_tree, cr, rect->x + xthickness,
+ rect->y + ythickness, rect->width - 2 * xthickness,
+ rect->height - 2 * ythickness);
+
+ style =
+ GetStyleContext(MOZ_GTK_SCROLLED_WINDOW, state->image_scale, direction);
+ gtk_render_frame(style, cr, rect->x, rect->y, rect->width, rect->height);
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_tree_header_cell_paint(cairo_t* cr,
+ const GdkRectangle* aRect,
+ GtkWidgetState* state,
+ gboolean isSorted,
+ GtkTextDirection direction) {
+ moz_gtk_button_paint(cr, aRect, state, GTK_RELIEF_NORMAL,
+ GetWidget(MOZ_GTK_TREE_HEADER_CELL), direction);
+ return MOZ_GTK_SUCCESS;
+}
+
+/* See gtk_expander_paint() for reference.
+ */
+static gint moz_gtk_treeview_expander_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkExpanderStyle expander_state,
+ GtkTextDirection direction) {
+ /* Because the frame we get is of the entire treeview, we can't get the
+ * precise event state of one expander, thus rendering hover and active
+ * feedback useless. */
+ GtkStateFlags state_flags =
+ state->disabled ? GTK_STATE_FLAG_INSENSITIVE : GTK_STATE_FLAG_NORMAL;
+
+ if (state->inHover)
+ state_flags =
+ static_cast<GtkStateFlags>(state_flags | GTK_STATE_FLAG_PRELIGHT);
+ if (state->selected)
+ state_flags =
+ static_cast<GtkStateFlags>(state_flags | GTK_STATE_FLAG_SELECTED);
+
+ /* GTK_STATE_FLAG_ACTIVE controls expanded/colapsed state rendering
+ * in gtk_render_expander()
+ */
+ if (expander_state == GTK_EXPANDER_EXPANDED)
+ state_flags =
+ static_cast<GtkStateFlags>(state_flags | checkbox_check_state);
+ else
+ state_flags =
+ static_cast<GtkStateFlags>(state_flags & ~(checkbox_check_state));
+
+ GtkStyleContext* style = GetStyleContext(
+ MOZ_GTK_TREEVIEW_EXPANDER, state->image_scale, direction, state_flags);
+ gtk_render_expander(style, cr, rect->x, rect->y, rect->width, rect->height);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+/* See gtk_separator_draw() for reference.
+ */
+static gint moz_gtk_combo_box_paint(cairo_t* cr, const GdkRectangle* aRect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ GdkRectangle arrow_rect, real_arrow_rect;
+ gint separator_width;
+ gboolean wide_separators;
+ GtkStyleContext* style;
+ GtkRequisition arrow_req;
+
+ GtkWidget* comboBoxButton = GetWidget(MOZ_GTK_COMBOBOX_BUTTON);
+ GtkWidget* comboBoxArrow = GetWidget(MOZ_GTK_COMBOBOX_ARROW);
+ if (!comboBoxButton || !comboBoxArrow) {
+ return MOZ_GTK_UNKNOWN_WIDGET;
+ }
+
+ /* Also sets the direction on gComboBoxButtonWidget, which is then
+ * inherited by the separator and arrow */
+ moz_gtk_button_paint(cr, aRect, state, GTK_RELIEF_NORMAL, comboBoxButton,
+ direction);
+
+ calculate_button_inner_rect(comboBoxButton, aRect, &arrow_rect, direction);
+ /* Now arrow_rect contains the inner rect ; we want to correct the width
+ * to what the arrow needs (see gtk_combo_box_size_allocate) */
+ gtk_widget_get_preferred_size(comboBoxArrow, NULL, &arrow_req);
+ moz_gtk_sanity_preferred_size(&arrow_req);
+
+ if (direction == GTK_TEXT_DIR_LTR)
+ arrow_rect.x += arrow_rect.width - arrow_req.width;
+ arrow_rect.width = arrow_req.width;
+
+ calculate_arrow_rect(comboBoxArrow, &arrow_rect, &real_arrow_rect, direction);
+
+ style = GetStyleContext(MOZ_GTK_COMBOBOX_ARROW, state->image_scale);
+ gtk_render_arrow(style, cr, ARROW_DOWN, real_arrow_rect.x, real_arrow_rect.y,
+ real_arrow_rect.width);
+
+ /* If there is no separator in the theme, there's nothing left to do. */
+ GtkWidget* widget = GetWidget(MOZ_GTK_COMBOBOX_SEPARATOR);
+ if (!widget) {
+ return MOZ_GTK_SUCCESS;
+ }
+ style = gtk_widget_get_style_context(widget);
+ StyleContextSetScale(style, state->image_scale);
+ gtk_style_context_get_style(style, "wide-separators", &wide_separators,
+ "separator-width", &separator_width, NULL);
+
+ if (wide_separators) {
+ if (direction == GTK_TEXT_DIR_LTR)
+ arrow_rect.x -= separator_width;
+ else
+ arrow_rect.x += arrow_rect.width;
+
+ gtk_render_frame(style, cr, arrow_rect.x, arrow_rect.y, separator_width,
+ arrow_rect.height);
+ } else {
+ if (direction == GTK_TEXT_DIR_LTR) {
+ GtkBorder padding;
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+ gtk_style_context_get_padding(style, state_flags, &padding);
+ arrow_rect.x -= padding.left;
+ } else
+ arrow_rect.x += arrow_rect.width;
+
+ gtk_render_line(style, cr, arrow_rect.x, arrow_rect.y, arrow_rect.x,
+ arrow_rect.y + arrow_rect.height);
+ }
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_arrow_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state, GtkArrowType arrow_type,
+ GtkTextDirection direction) {
+ GdkRectangle arrow_rect;
+ gdouble arrow_angle;
+
+ if (direction == GTK_TEXT_DIR_RTL) {
+ if (arrow_type == GTK_ARROW_LEFT) {
+ arrow_type = GTK_ARROW_RIGHT;
+ } else if (arrow_type == GTK_ARROW_RIGHT) {
+ arrow_type = GTK_ARROW_LEFT;
+ }
+ }
+ switch (arrow_type) {
+ case GTK_ARROW_LEFT:
+ arrow_angle = ARROW_LEFT;
+ break;
+ case GTK_ARROW_RIGHT:
+ arrow_angle = ARROW_RIGHT;
+ break;
+ case GTK_ARROW_DOWN:
+ arrow_angle = ARROW_DOWN;
+ break;
+ default:
+ arrow_angle = ARROW_UP;
+ break;
+ }
+ if (arrow_type == GTK_ARROW_NONE) return MOZ_GTK_SUCCESS;
+
+ GtkWidget* widget = GetWidget(MOZ_GTK_BUTTON_ARROW);
+ if (!widget) {
+ return MOZ_GTK_UNKNOWN_WIDGET;
+ }
+ calculate_arrow_rect(widget, rect, &arrow_rect, direction);
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+ GtkStyleContext* style = GetStyleContext(
+ MOZ_GTK_BUTTON_ARROW, state->image_scale, direction, state_flags);
+ gtk_render_arrow(style, cr, arrow_angle, arrow_rect.x, arrow_rect.y,
+ arrow_rect.width);
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_tooltip_paint(cairo_t* cr, const GdkRectangle* aRect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ // Tooltip widget is made in GTK3 as following tree:
+ // Tooltip window
+ // Horizontal Box
+ // Icon (not supported by Firefox)
+ // Label
+ // Each element can be fully styled by CSS of GTK theme.
+ // We have to draw all elements with appropriate offset and right dimensions.
+
+ // Tooltip drawing
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_TOOLTIP, state->image_scale, direction);
+ GdkRectangle rect = *aRect;
+ gtk_render_background(style, cr, rect.x, rect.y, rect.width, rect.height);
+ gtk_render_frame(style, cr, rect.x, rect.y, rect.width, rect.height);
+
+ // Horizontal Box drawing
+ //
+ // The box element has hard-coded 6px margin-* GtkWidget properties, which
+ // are added between the window dimensions and the CSS margin box of the
+ // horizontal box. The frame of the tooltip window is drawn in the
+ // 6px margin.
+ // For drawing Horizontal Box we have to inset drawing area by that 6px
+ // plus its CSS margin.
+ GtkStyleContext* boxStyle =
+ GetStyleContext(MOZ_GTK_TOOLTIP_BOX, state->image_scale, direction);
+
+ rect.x += 6;
+ rect.y += 6;
+ rect.width -= 12;
+ rect.height -= 12;
+
+ InsetByMargin(&rect, boxStyle);
+ gtk_render_background(boxStyle, cr, rect.x, rect.y, rect.width, rect.height);
+ gtk_render_frame(boxStyle, cr, rect.x, rect.y, rect.width, rect.height);
+
+ // Label drawing
+ InsetByBorderPadding(&rect, boxStyle);
+
+ GtkStyleContext* labelStyle =
+ GetStyleContext(MOZ_GTK_TOOLTIP_BOX_LABEL, state->image_scale, direction);
+ moz_gtk_draw_styled_frame(labelStyle, cr, &rect, false);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_resizer_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_RESIZER, state->image_scale, GTK_TEXT_DIR_LTR,
+ GetStateFlagsFromGtkWidgetState(state));
+
+ // Workaround unico not respecting the text direction for resizers.
+ // See bug 1174248.
+ cairo_save(cr);
+ if (direction == GTK_TEXT_DIR_RTL) {
+ cairo_matrix_t mat;
+ cairo_matrix_init_translate(&mat, 2 * rect->x + rect->width, 0);
+ cairo_matrix_scale(&mat, -1, 1);
+ cairo_transform(cr, &mat);
+ }
+
+ gtk_render_handle(style, cr, rect->x, rect->y, rect->width, rect->height);
+ cairo_restore(cr);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_frame_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_FRAME, state->image_scale, direction);
+ gtk_render_frame(style, cr, rect->x, rect->y, rect->width, rect->height);
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_progressbar_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_PROGRESS_TROUGH, state->image_scale, direction);
+ gtk_render_background(style, cr, rect->x, rect->y, rect->width, rect->height);
+ gtk_render_frame(style, cr, rect->x, rect->y, rect->width, rect->height);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_progress_chunk_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction,
+ WidgetNodeType widget) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_PROGRESS_CHUNK, state->image_scale, direction);
+
+ if (widget == MOZ_GTK_PROGRESS_CHUNK_INDETERMINATE ||
+ widget == MOZ_GTK_PROGRESS_CHUNK_VERTICAL_INDETERMINATE) {
+ /**
+ * The bar's size and the bar speed are set depending of the progress'
+ * size. These could also be constant for all progress bars easily.
+ */
+ gboolean vertical =
+ (widget == MOZ_GTK_PROGRESS_CHUNK_VERTICAL_INDETERMINATE);
+
+ /* The size of the dimension we are going to use for the animation. */
+ const gint progressSize = vertical ? rect->height : rect->width;
+
+ /* The bar is using a fifth of the element size, based on GtkProgressBar
+ * activity-blocks property. */
+ const gint barSize = MAX(1, progressSize / 5);
+
+ /* Represents the travel that has to be done for a complete cycle. */
+ const gint travel = 2 * (progressSize - barSize);
+
+ /* period equals to travel / pixelsPerMillisecond
+ * where pixelsPerMillisecond equals progressSize / 1000.0.
+ * This is equivalent to 1600. */
+ static const guint period = 1600;
+ const gint t = PR_IntervalToMilliseconds(PR_IntervalNow()) % period;
+ const gint dx = travel * t / period;
+
+ if (vertical) {
+ rect->y += (dx < travel / 2) ? dx : travel - dx;
+ rect->height = barSize;
+ } else {
+ rect->x += (dx < travel / 2) ? dx : travel - dx;
+ rect->width = barSize;
+ }
+ }
+
+ gtk_render_background(style, cr, rect->x, rect->y, rect->width, rect->height);
+ gtk_render_frame(style, cr, rect->x, rect->y, rect->width, rect->height);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_get_tab_thickness(GtkStyleContext* style) {
+ if (!notebook_has_tab_gap)
+ return 0; /* tabs do not overdraw the tabpanel border with "no gap" style */
+
+ GtkBorder border;
+ gtk_style_context_get_border(style, gtk_style_context_get_state(style),
+ &border);
+ if (border.top < 2) return 2; /* some themes don't set ythickness correctly */
+
+ return border.top;
+}
+
+gint moz_gtk_get_tab_thickness(WidgetNodeType aNodeType) {
+ GtkStyleContext* style = GetStyleContext(aNodeType);
+ int thickness = moz_gtk_get_tab_thickness(style);
+ return thickness;
+}
+
+/* actual small tabs */
+static gint moz_gtk_tab_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state, GtkTabFlags flags,
+ GtkTextDirection direction,
+ WidgetNodeType widget) {
+ /* When the tab isn't selected, we just draw a notebook extension.
+ * When it is selected, we overwrite the adjacent border of the tabpanel
+ * touching the tab with a pierced border (called "the gap") to make the
+ * tab appear physically attached to the tabpanel; see details below. */
+
+ GtkStyleContext* style;
+ GdkRectangle tabRect;
+ GdkRectangle focusRect;
+ GdkRectangle backRect;
+ int initial_gap = 0;
+ bool isBottomTab = (widget == MOZ_GTK_TAB_BOTTOM);
+
+ style = GetStyleContext(widget, state->image_scale, direction,
+ GetStateFlagsFromGtkTabFlags(flags));
+ tabRect = *rect;
+
+ if (flags & MOZ_GTK_TAB_FIRST) {
+ gtk_style_context_get_style(style, "initial-gap", &initial_gap, NULL);
+ tabRect.width -= initial_gap;
+
+ if (direction != GTK_TEXT_DIR_RTL) {
+ tabRect.x += initial_gap;
+ }
+ }
+
+ focusRect = backRect = tabRect;
+
+ if (notebook_has_tab_gap) {
+ if ((flags & MOZ_GTK_TAB_SELECTED) == 0) {
+ /* Only draw the tab */
+ gtk_render_extension(style, cr, tabRect.x, tabRect.y, tabRect.width,
+ tabRect.height,
+ isBottomTab ? GTK_POS_TOP : GTK_POS_BOTTOM);
+ } else {
+ /* Draw the tab and the gap
+ * We want the gap to be positioned exactly on the tabpanel top
+ * border; since tabbox.css may set a negative margin so that the tab
+ * frame rect already overlaps the tabpanel frame rect, we need to take
+ * that into account when drawing. To that effect, nsNativeThemeGTK
+ * passes us this negative margin (bmargin in the graphic below) in the
+ * lowest bits of |flags|. We use it to set gap_voffset, the distance
+ * between the top of the gap and the bottom of the tab (resp. the
+ * bottom of the gap and the top of the tab when we draw a bottom tab),
+ * while ensuring that the gap always touches the border of the tab,
+ * i.e. 0 <= gap_voffset <= gap_height, to avoid surprinsing results
+ * with big negative or positive margins.
+ * Here is a graphical explanation in the case of top tabs:
+ * ___________________________
+ * / \
+ * | T A B |
+ * ----------|. . . . . . . . . . . . . . .|----- top of tabpanel
+ * : ^ bmargin : ^
+ * : | (-negative margin, : |
+ * bottom : v passed in flags) : | gap_height
+ * of -> :.............................: | (the size of the
+ * the tab . part of the gap . | tabpanel top border)
+ * . outside of the tab . v
+ * ----------------------------------------------
+ *
+ * To draw the gap, we use gtk_render_frame_gap(), see comment in
+ * moz_gtk_tabpanels_paint(). This gap is made 3 * gap_height tall,
+ * which should suffice to ensure that the only visible border is the
+ * pierced one. If the tab is in the middle, we make the box_gap begin
+ * a bit to the left of the tab and end a bit to the right, adjusting
+ * the gap position so it still is under the tab, because we want the
+ * rendering of a gap in the middle of a tabpanel. This is the role of
+ * the gints gap_{l,r}_offset. On the contrary, if the tab is the
+ * first, we align the start border of the box_gap with the start
+ * border of the tab (left if LTR, right if RTL), by setting the
+ * appropriate offset to 0.*/
+ gint gap_loffset, gap_roffset, gap_voffset, gap_height;
+
+ /* Get height needed by the gap */
+ gap_height = moz_gtk_get_tab_thickness(style);
+
+ /* Extract gap_voffset from the first bits of flags */
+ gap_voffset = flags & MOZ_GTK_TAB_MARGIN_MASK;
+ if (gap_voffset > gap_height) gap_voffset = gap_height;
+
+ /* Set gap_{l,r}_offset to appropriate values */
+ gap_loffset = gap_roffset = 20; /* should be enough */
+ if (flags & MOZ_GTK_TAB_FIRST) {
+ if (direction == GTK_TEXT_DIR_RTL)
+ gap_roffset = initial_gap;
+ else
+ gap_loffset = initial_gap;
+ }
+
+ GtkStyleContext* panelStyle =
+ GetStyleContext(MOZ_GTK_TABPANELS, state->image_scale, direction);
+
+ if (isBottomTab) {
+ /* Draw the tab on bottom */
+ focusRect.y += gap_voffset;
+ focusRect.height -= gap_voffset;
+
+ gtk_render_extension(style, cr, tabRect.x, tabRect.y + gap_voffset,
+ tabRect.width, tabRect.height - gap_voffset,
+ GTK_POS_TOP);
+
+ backRect.y += (gap_voffset - gap_height);
+ backRect.height = gap_height;
+
+ /* Draw the gap; erase with background color before painting in
+ * case theme does not */
+ gtk_render_background(panelStyle, cr, backRect.x, backRect.y,
+ backRect.width, backRect.height);
+ cairo_save(cr);
+ cairo_rectangle(cr, backRect.x, backRect.y, backRect.width,
+ backRect.height);
+ cairo_clip(cr);
+
+ gtk_render_frame_gap(panelStyle, cr, tabRect.x - gap_loffset,
+ tabRect.y + gap_voffset - 3 * gap_height,
+ tabRect.width + gap_loffset + gap_roffset,
+ 3 * gap_height, GTK_POS_BOTTOM, gap_loffset,
+ gap_loffset + tabRect.width);
+ cairo_restore(cr);
+ } else {
+ /* Draw the tab on top */
+ focusRect.height -= gap_voffset;
+ gtk_render_extension(style, cr, tabRect.x, tabRect.y, tabRect.width,
+ tabRect.height - gap_voffset, GTK_POS_BOTTOM);
+
+ backRect.y += (tabRect.height - gap_voffset);
+ backRect.height = gap_height;
+
+ /* Draw the gap; erase with background color before painting in
+ * case theme does not */
+ gtk_render_background(panelStyle, cr, backRect.x, backRect.y,
+ backRect.width, backRect.height);
+
+ cairo_save(cr);
+ cairo_rectangle(cr, backRect.x, backRect.y, backRect.width,
+ backRect.height);
+ cairo_clip(cr);
+
+ gtk_render_frame_gap(panelStyle, cr, tabRect.x - gap_loffset,
+ tabRect.y + tabRect.height - gap_voffset,
+ tabRect.width + gap_loffset + gap_roffset,
+ 3 * gap_height, GTK_POS_TOP, gap_loffset,
+ gap_loffset + tabRect.width);
+ cairo_restore(cr);
+ }
+ }
+ } else {
+ gtk_render_background(style, cr, tabRect.x, tabRect.y, tabRect.width,
+ tabRect.height);
+ gtk_render_frame(style, cr, tabRect.x, tabRect.y, tabRect.width,
+ tabRect.height);
+ }
+
+ if (state->focused) {
+ /* Paint the focus ring */
+ GtkBorder padding;
+ gtk_style_context_get_padding(style, GetStateFlagsFromGtkWidgetState(state),
+ &padding);
+
+ focusRect.x += padding.left;
+ focusRect.width -= (padding.left + padding.right);
+ focusRect.y += padding.top;
+ focusRect.height -= (padding.top + padding.bottom);
+
+ gtk_render_focus(style, cr, focusRect.x, focusRect.y, focusRect.width,
+ focusRect.height);
+ }
+
+ return MOZ_GTK_SUCCESS;
+}
+
+/* tab area*/
+static gint moz_gtk_tabpanels_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkTextDirection direction) {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_TABPANELS, state->image_scale, direction);
+ gtk_render_background(style, cr, rect->x, rect->y, rect->width, rect->height);
+ /*
+ * The gap size is not needed in moz_gtk_tabpanels_paint because
+ * the gap will be painted with the foreground tab in moz_gtk_tab_paint.
+ *
+ * However, if moz_gtk_tabpanels_paint just uses gtk_render_frame(),
+ * the theme will think that there are no tabs and may draw something
+ * different.Hence the trick of using two clip regions, and drawing the
+ * gap outside each clip region, to get the correct frame for
+ * a tabpanel with tabs.
+ */
+ /* left side */
+ cairo_save(cr);
+ cairo_rectangle(cr, rect->x, rect->y, rect->x + rect->width / 2,
+ rect->y + rect->height);
+ cairo_clip(cr);
+ gtk_render_frame_gap(style, cr, rect->x, rect->y, rect->width, rect->height,
+ GTK_POS_TOP, rect->width - 1, rect->width);
+ cairo_restore(cr);
+
+ /* right side */
+ cairo_save(cr);
+ cairo_rectangle(cr, rect->x + rect->width / 2, rect->y, rect->x + rect->width,
+ rect->y + rect->height);
+ cairo_clip(cr);
+ gtk_render_frame_gap(style, cr, rect->x, rect->y, rect->width, rect->height,
+ GTK_POS_TOP, 0, 1);
+ cairo_restore(cr);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_tab_scroll_arrow_paint(cairo_t* cr, GdkRectangle* rect,
+ GtkWidgetState* state,
+ GtkArrowType arrow_type,
+ GtkTextDirection direction) {
+ GtkStyleContext* style;
+ gdouble arrow_angle;
+ gint arrow_size = MIN(rect->width, rect->height);
+ gint x = rect->x + (rect->width - arrow_size) / 2;
+ gint y = rect->y + (rect->height - arrow_size) / 2;
+
+ if (direction == GTK_TEXT_DIR_RTL) {
+ arrow_type =
+ (arrow_type == GTK_ARROW_LEFT) ? GTK_ARROW_RIGHT : GTK_ARROW_LEFT;
+ }
+ switch (arrow_type) {
+ case GTK_ARROW_LEFT:
+ arrow_angle = ARROW_LEFT;
+ break;
+ case GTK_ARROW_RIGHT:
+ arrow_angle = ARROW_RIGHT;
+ break;
+ case GTK_ARROW_DOWN:
+ arrow_angle = ARROW_DOWN;
+ break;
+ default:
+ arrow_angle = ARROW_UP;
+ break;
+ }
+ if (arrow_type != GTK_ARROW_NONE) {
+ style = GetStyleContext(MOZ_GTK_TAB_SCROLLARROW, state->image_scale,
+ direction, GetStateFlagsFromGtkWidgetState(state));
+ gtk_render_arrow(style, cr, arrow_angle, x, y, arrow_size);
+ }
+ return MOZ_GTK_SUCCESS;
+}
+
+static gint moz_gtk_header_bar_paint(WidgetNodeType widgetType, cairo_t* cr,
+ GdkRectangle* rect,
+ GtkWidgetState* state) {
+ GtkStateFlags state_flags = GetStateFlagsFromGtkWidgetState(state);
+ GtkStyleContext* style = GetStyleContext(widgetType, state->image_scale,
+ GTK_TEXT_DIR_NONE, state_flags);
+
+ // Some themes like Elementary's style the container of the headerbar rather
+ // than the header bar itself.
+ if (HeaderBarShouldDrawContainer(widgetType)) {
+ auto containerType = widgetType == MOZ_GTK_HEADER_BAR
+ ? MOZ_GTK_HEADERBAR_FIXED
+ : MOZ_GTK_HEADERBAR_FIXED_MAXIMIZED;
+ style = GetStyleContext(containerType, state->image_scale,
+ GTK_TEXT_DIR_NONE, state_flags);
+ }
+
+ gtk_render_background(style, cr, rect->x, rect->y, rect->width, rect->height);
+ gtk_render_frame(style, cr, rect->x, rect->y, rect->width, rect->height);
+
+ return MOZ_GTK_SUCCESS;
+}
+
+gint moz_gtk_get_widget_border(WidgetNodeType widget, gint* left, gint* top,
+ gint* right, gint* bottom,
+ // NOTE: callers depend on direction being used
+ // only for MOZ_GTK_DROPDOWN widgets.
+ GtkTextDirection direction) {
+ GtkWidget* w;
+ GtkStyleContext* style;
+ *left = *top = *right = *bottom = 0;
+
+ switch (widget) {
+ case MOZ_GTK_BUTTON:
+ case MOZ_GTK_TOOLBAR_BUTTON: {
+ style = GetStyleContext(MOZ_GTK_BUTTON);
+
+ *left = *top = *right = *bottom = gtk_container_get_border_width(
+ GTK_CONTAINER(GetWidget(MOZ_GTK_BUTTON)));
+
+ if (widget == MOZ_GTK_TOOLBAR_BUTTON) {
+ gtk_style_context_save(style);
+ gtk_style_context_add_class(style, "image-button");
+ }
+
+ moz_gtk_add_style_padding(style, left, top, right, bottom);
+
+ if (widget == MOZ_GTK_TOOLBAR_BUTTON) gtk_style_context_restore(style);
+
+ moz_gtk_add_style_border(style, left, top, right, bottom);
+
+ return MOZ_GTK_SUCCESS;
+ }
+ case MOZ_GTK_ENTRY:
+ case MOZ_GTK_DROPDOWN_ENTRY: {
+ style = GetStyleContext(widget);
+
+ // XXX: Subtract 1 pixel from the padding to account for the default
+ // padding in forms.css. See bug 1187385.
+ *left = *top = *right = *bottom = -1;
+ moz_gtk_add_border_padding(style, left, top, right, bottom);
+
+ return MOZ_GTK_SUCCESS;
+ }
+ case MOZ_GTK_TEXT_VIEW:
+ case MOZ_GTK_TREEVIEW: {
+ style = GetStyleContext(MOZ_GTK_SCROLLED_WINDOW);
+ moz_gtk_add_style_border(style, left, top, right, bottom);
+ return MOZ_GTK_SUCCESS;
+ }
+ case MOZ_GTK_TREE_HEADER_CELL: {
+ /* A Tree Header in GTK is just a different styled button
+ * It must be placed in a TreeView for getting the correct style
+ * assigned.
+ * That is why the following code is the same as for MOZ_GTK_BUTTON.
+ * */
+ *left = *top = *right = *bottom = gtk_container_get_border_width(
+ GTK_CONTAINER(GetWidget(MOZ_GTK_TREE_HEADER_CELL)));
+ style = GetStyleContext(MOZ_GTK_TREE_HEADER_CELL);
+ moz_gtk_add_border_padding(style, left, top, right, bottom);
+ return MOZ_GTK_SUCCESS;
+ }
+ case MOZ_GTK_DROPDOWN: {
+ /* We need to account for the arrow on the dropdown, so text
+ * doesn't come too close to the arrow, or in some cases spill
+ * into the arrow. */
+ gboolean wide_separators;
+ gint separator_width;
+ GtkRequisition arrow_req;
+ GtkBorder border;
+
+ *left = *top = *right = *bottom = gtk_container_get_border_width(
+ GTK_CONTAINER(GetWidget(MOZ_GTK_COMBOBOX_BUTTON)));
+ style = GetStyleContext(MOZ_GTK_COMBOBOX_BUTTON);
+ moz_gtk_add_border_padding(style, left, top, right, bottom);
+
+ /* If there is no separator, don't try to count its width. */
+ separator_width = 0;
+ GtkWidget* comboBoxSeparator = GetWidget(MOZ_GTK_COMBOBOX_SEPARATOR);
+ if (comboBoxSeparator) {
+ style = gtk_widget_get_style_context(comboBoxSeparator);
+ gtk_style_context_get_style(style, "wide-separators", &wide_separators,
+ "separator-width", &separator_width, NULL);
+
+ if (!wide_separators) {
+ gtk_style_context_get_border(
+ style, gtk_style_context_get_state(style), &border);
+ separator_width = border.left;
+ }
+ }
+
+ gtk_widget_get_preferred_size(GetWidget(MOZ_GTK_COMBOBOX_ARROW), NULL,
+ &arrow_req);
+ moz_gtk_sanity_preferred_size(&arrow_req);
+
+ if (direction == GTK_TEXT_DIR_RTL)
+ *left += separator_width + arrow_req.width;
+ else
+ *right += separator_width + arrow_req.width;
+
+ return MOZ_GTK_SUCCESS;
+ }
+ case MOZ_GTK_TABPANELS:
+ w = GetWidget(MOZ_GTK_TABPANELS);
+ break;
+ case MOZ_GTK_PROGRESSBAR:
+ w = GetWidget(MOZ_GTK_PROGRESSBAR);
+ break;
+ case MOZ_GTK_SPINBUTTON_ENTRY:
+ case MOZ_GTK_SPINBUTTON_UP:
+ case MOZ_GTK_SPINBUTTON_DOWN:
+ w = GetWidget(MOZ_GTK_SPINBUTTON);
+ break;
+ case MOZ_GTK_SCALE_HORIZONTAL:
+ case MOZ_GTK_SCALE_VERTICAL:
+ w = GetWidget(widget);
+ break;
+ case MOZ_GTK_FRAME:
+ w = GetWidget(MOZ_GTK_FRAME);
+ break;
+ case MOZ_GTK_TOOLTIP: {
+ // In GTK 3 there are 6 pixels of additional margin around the box.
+ // See details there:
+ // https://github.com/GNOME/gtk/blob/5ea69a136bd7e4970b3a800390e20314665aaed2/gtk/ui/gtktooltipwindow.ui#L11
+ *left = *right = *top = *bottom = 6;
+
+ // We also need to add margin/padding/borders from Tooltip content.
+ // Tooltip contains horizontal box, where icon and label is put.
+ // We ignore icon as long as we don't have support for it.
+ GtkStyleContext* boxStyle = GetStyleContext(MOZ_GTK_TOOLTIP_BOX);
+ moz_gtk_add_margin_border_padding(boxStyle, left, top, right, bottom);
+
+ GtkStyleContext* labelStyle = GetStyleContext(MOZ_GTK_TOOLTIP_BOX_LABEL);
+ moz_gtk_add_margin_border_padding(labelStyle, left, top, right, bottom);
+
+ return MOZ_GTK_SUCCESS;
+ }
+ case MOZ_GTK_HEADER_BAR_BUTTON_BOX: {
+ style = GetStyleContext(MOZ_GTK_HEADER_BAR);
+ moz_gtk_add_border_padding(style, left, top, right, bottom);
+ *top = *bottom = 0;
+ bool leftButtonsPlacement = false;
+ GetGtkHeaderBarButtonLayout({}, &leftButtonsPlacement);
+ if (direction == GTK_TEXT_DIR_RTL) {
+ leftButtonsPlacement = !leftButtonsPlacement;
+ }
+ if (leftButtonsPlacement) {
+ *right = 0;
+ } else {
+ *left = 0;
+ }
+ return MOZ_GTK_SUCCESS;
+ }
+ /* These widgets have no borders, since they are not containers. */
+ case MOZ_GTK_SPLITTER_HORIZONTAL:
+ case MOZ_GTK_SPLITTER_VERTICAL:
+ case MOZ_GTK_CHECKBUTTON:
+ case MOZ_GTK_RADIOBUTTON:
+ case MOZ_GTK_SCALE_THUMB_HORIZONTAL:
+ case MOZ_GTK_SCALE_THUMB_VERTICAL:
+ case MOZ_GTK_PROGRESS_CHUNK:
+ case MOZ_GTK_PROGRESS_CHUNK_INDETERMINATE:
+ case MOZ_GTK_PROGRESS_CHUNK_VERTICAL_INDETERMINATE:
+ case MOZ_GTK_TREEVIEW_EXPANDER:
+ case MOZ_GTK_HEADER_BAR:
+ case MOZ_GTK_HEADER_BAR_MAXIMIZED:
+ case MOZ_GTK_HEADER_BAR_BUTTON_CLOSE:
+ case MOZ_GTK_HEADER_BAR_BUTTON_MINIMIZE:
+ case MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE:
+ case MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE_RESTORE:
+ /* These widgets have no borders.*/
+ case MOZ_GTK_INNER_SPIN_BUTTON:
+ case MOZ_GTK_SPINBUTTON:
+ case MOZ_GTK_WINDOW_DECORATION:
+ case MOZ_GTK_WINDOW_DECORATION_SOLID:
+ case MOZ_GTK_RESIZER:
+ case MOZ_GTK_TOOLBARBUTTON_ARROW:
+ case MOZ_GTK_TAB_SCROLLARROW:
+ return MOZ_GTK_SUCCESS;
+ default:
+ g_warning("Unsupported widget type: %d", widget);
+ return MOZ_GTK_UNKNOWN_WIDGET;
+ }
+ /* TODO - we're still missing some widget implementations */
+ if (w) {
+ moz_gtk_add_style_border(gtk_widget_get_style_context(w), left, top, right,
+ bottom);
+ }
+ return MOZ_GTK_SUCCESS;
+}
+
+gint moz_gtk_get_tab_border(gint* left, gint* top, gint* right, gint* bottom,
+ GtkTextDirection direction, GtkTabFlags flags,
+ WidgetNodeType widget) {
+ GtkStyleContext* style = GetStyleContext(widget, 1, direction,
+ GetStateFlagsFromGtkTabFlags(flags));
+
+ *left = *top = *right = *bottom = 0;
+ moz_gtk_add_style_padding(style, left, top, right, bottom);
+
+ // Gtk >= 3.20 does not use those styles
+ if (gtk_check_version(3, 20, 0) != nullptr) {
+ int tab_curvature;
+
+ gtk_style_context_get_style(style, "tab-curvature", &tab_curvature, NULL);
+ *left += tab_curvature;
+ *right += tab_curvature;
+
+ if (flags & MOZ_GTK_TAB_FIRST) {
+ int initial_gap = 0;
+ gtk_style_context_get_style(style, "initial-gap", &initial_gap, NULL);
+ if (direction == GTK_TEXT_DIR_RTL)
+ *right += initial_gap;
+ else
+ *left += initial_gap;
+ }
+ } else {
+ GtkBorder margin;
+
+ gtk_style_context_get_margin(style, gtk_style_context_get_state(style),
+ &margin);
+ *left += margin.left;
+ *right += margin.right;
+
+ if (flags & MOZ_GTK_TAB_FIRST) {
+ style = GetStyleContext(MOZ_GTK_NOTEBOOK_HEADER, direction);
+ gtk_style_context_get_margin(style, gtk_style_context_get_state(style),
+ &margin);
+ *left += margin.left;
+ *right += margin.right;
+ }
+ }
+
+ return MOZ_GTK_SUCCESS;
+}
+
+gint moz_gtk_get_tab_scroll_arrow_size(gint* width, gint* height) {
+ gint arrow_size;
+
+ GtkStyleContext* style = GetStyleContext(MOZ_GTK_TABPANELS);
+ gtk_style_context_get_style(style, "scroll-arrow-hlength", &arrow_size, NULL);
+
+ *height = *width = arrow_size;
+
+ return MOZ_GTK_SUCCESS;
+}
+
+void moz_gtk_get_arrow_size(WidgetNodeType widgetType, gint* width,
+ gint* height) {
+ GtkWidget* widget;
+ switch (widgetType) {
+ case MOZ_GTK_DROPDOWN:
+ widget = GetWidget(MOZ_GTK_COMBOBOX_ARROW);
+ break;
+ default:
+ widget = GetWidget(MOZ_GTK_BUTTON_ARROW);
+ break;
+ }
+ if (widget) {
+ GtkRequisition requisition;
+ gtk_widget_get_preferred_size(widget, NULL, &requisition);
+ moz_gtk_sanity_preferred_size(&requisition);
+
+ *width = requisition.width;
+ *height = requisition.height;
+ } else {
+ *width = 0;
+ *height = 0;
+ }
+}
+
+gint moz_gtk_get_expander_size(gint* size) {
+ GtkStyleContext* style = GetStyleContext(MOZ_GTK_EXPANDER);
+ gtk_style_context_get_style(style, "expander-size", size, NULL);
+ return MOZ_GTK_SUCCESS;
+}
+
+gint moz_gtk_get_treeview_expander_size(gint* size) {
+ GtkStyleContext* style = GetStyleContext(MOZ_GTK_TREEVIEW);
+ gtk_style_context_get_style(style, "expander-size", size, NULL);
+ return MOZ_GTK_SUCCESS;
+}
+
+void moz_gtk_get_entry_min_height(gint* min_content_height,
+ gint* border_padding_height) {
+ GtkStyleContext* style = GetStyleContext(MOZ_GTK_ENTRY);
+ if (!gtk_check_version(3, 20, 0)) {
+ gtk_style_context_get(style, gtk_style_context_get_state(style),
+ "min-height", min_content_height, nullptr);
+ } else {
+ *min_content_height = 0;
+ }
+
+ GtkBorder border;
+ GtkBorder padding;
+ gtk_style_context_get_border(style, gtk_style_context_get_state(style),
+ &border);
+ gtk_style_context_get_padding(style, gtk_style_context_get_state(style),
+ &padding);
+
+ *border_padding_height =
+ (border.top + border.bottom + padding.top + padding.bottom);
+}
+
+void moz_gtk_get_scale_metrics(GtkOrientation orient, gint* scale_width,
+ gint* scale_height) {
+ if (gtk_check_version(3, 20, 0) != nullptr) {
+ WidgetNodeType widget = (orient == GTK_ORIENTATION_HORIZONTAL)
+ ? MOZ_GTK_SCALE_HORIZONTAL
+ : MOZ_GTK_SCALE_VERTICAL;
+
+ gint thumb_length, thumb_height, trough_border;
+ moz_gtk_get_scalethumb_metrics(orient, &thumb_length, &thumb_height);
+
+ GtkStyleContext* style = GetStyleContext(widget);
+ gtk_style_context_get_style(style, "trough-border", &trough_border, NULL);
+
+ if (orient == GTK_ORIENTATION_HORIZONTAL) {
+ *scale_width = thumb_length + trough_border * 2;
+ *scale_height = thumb_height + trough_border * 2;
+ } else {
+ *scale_width = thumb_height + trough_border * 2;
+ *scale_height = thumb_length + trough_border * 2;
+ }
+ } else {
+ WidgetNodeType widget = (orient == GTK_ORIENTATION_HORIZONTAL)
+ ? MOZ_GTK_SCALE_TROUGH_HORIZONTAL
+ : MOZ_GTK_SCALE_TROUGH_VERTICAL;
+ moz_gtk_get_widget_min_size(GetStyleContext(widget), scale_width,
+ scale_height);
+ }
+}
+
+gint moz_gtk_get_scalethumb_metrics(GtkOrientation orient, gint* thumb_length,
+ gint* thumb_height) {
+ if (gtk_check_version(3, 20, 0) != nullptr) {
+ WidgetNodeType widget = (orient == GTK_ORIENTATION_HORIZONTAL)
+ ? MOZ_GTK_SCALE_HORIZONTAL
+ : MOZ_GTK_SCALE_VERTICAL;
+ GtkStyleContext* style = GetStyleContext(widget);
+ gtk_style_context_get_style(style, "slider_length", thumb_length,
+ "slider_width", thumb_height, NULL);
+ } else {
+ WidgetNodeType widget = (orient == GTK_ORIENTATION_HORIZONTAL)
+ ? MOZ_GTK_SCALE_THUMB_HORIZONTAL
+ : MOZ_GTK_SCALE_THUMB_VERTICAL;
+ GtkStyleContext* style = GetStyleContext(widget);
+
+ gint min_width, min_height;
+ GtkStateFlags state = gtk_style_context_get_state(style);
+ gtk_style_context_get(style, state, "min-width", &min_width, "min-height",
+ &min_height, nullptr);
+ GtkBorder margin;
+ gtk_style_context_get_margin(style, state, &margin);
+ gint margin_width = margin.left + margin.right;
+ gint margin_height = margin.top + margin.bottom;
+
+ // Negative margin of slider element also determines its minimal size
+ // so use bigger of those two values.
+ if (min_width < -margin_width) min_width = -margin_width;
+ if (min_height < -margin_height) min_height = -margin_height;
+
+ *thumb_length = min_width;
+ *thumb_height = min_height;
+ }
+
+ return MOZ_GTK_SUCCESS;
+}
+
+const ToggleGTKMetrics* GetToggleMetrics(WidgetNodeType aWidgetType) {
+ ToggleGTKMetrics* metrics;
+
+ switch (aWidgetType) {
+ case MOZ_GTK_RADIOBUTTON:
+ metrics = &sRadioMetrics;
+ break;
+ case MOZ_GTK_CHECKBUTTON:
+ metrics = &sCheckboxMetrics;
+ break;
+ default:
+ MOZ_CRASH("Unsupported widget type for getting metrics");
+ return nullptr;
+ }
+
+ metrics->initialized = true;
+ if (gtk_check_version(3, 20, 0) == nullptr) {
+ GtkStyleContext* style = GetStyleContext(aWidgetType);
+ GtkStateFlags state_flags = gtk_style_context_get_state(style);
+ gtk_style_context_get(style, state_flags, "min-height",
+ &(metrics->minSizeWithBorder.height), "min-width",
+ &(metrics->minSizeWithBorder.width), nullptr);
+ // Fallback to indicator size if min dimensions are zero
+ if (metrics->minSizeWithBorder.height == 0 ||
+ metrics->minSizeWithBorder.width == 0) {
+ gint indicator_size = 0;
+ gtk_widget_style_get(GetWidget(MOZ_GTK_CHECKBUTTON_CONTAINER),
+ "indicator_size", &indicator_size, nullptr);
+ if (metrics->minSizeWithBorder.height == 0) {
+ metrics->minSizeWithBorder.height = indicator_size;
+ }
+ if (metrics->minSizeWithBorder.width == 0) {
+ metrics->minSizeWithBorder.width = indicator_size;
+ }
+ }
+
+ GtkBorder border, padding;
+ gtk_style_context_get_border(style, state_flags, &border);
+ gtk_style_context_get_padding(style, state_flags, &padding);
+ metrics->borderAndPadding.left = border.left + padding.left;
+ metrics->borderAndPadding.right = border.right + padding.right;
+ metrics->borderAndPadding.top = border.top + padding.top;
+ metrics->borderAndPadding.bottom = border.bottom + padding.bottom;
+ metrics->minSizeWithBorder.width +=
+ metrics->borderAndPadding.left + metrics->borderAndPadding.right;
+ metrics->minSizeWithBorder.height +=
+ metrics->borderAndPadding.top + metrics->borderAndPadding.bottom;
+ } else {
+ gint indicator_size = 0, indicator_spacing = 0;
+ gtk_widget_style_get(GetWidget(MOZ_GTK_CHECKBUTTON_CONTAINER),
+ "indicator_size", &indicator_size, "indicator_spacing",
+ &indicator_spacing, nullptr);
+ metrics->minSizeWithBorder.width = metrics->minSizeWithBorder.height =
+ indicator_size;
+ }
+ return metrics;
+}
+
+/*
+ * get_shadow_width() from gtkwindow.c is not public so we need
+ * to implement it.
+ */
+void InitWindowDecorationSize(CSDWindowDecorationSize* sWindowDecorationSize,
+ bool aPopupWindow) {
+ bool solidDecorations = gtk_style_context_has_class(
+ GetStyleContext(MOZ_GTK_HEADERBAR_WINDOW, 1), "solid-csd");
+ // solid-csd does not use frame extents, quit now.
+ if (solidDecorations) {
+ sWindowDecorationSize->decorationSize = {0, 0, 0, 0};
+ return;
+ }
+
+ // Scale factor is applied later when decoration size is used for actual
+ // gtk windows.
+ GtkStyleContext* context = GetStyleContext(MOZ_GTK_WINDOW_DECORATION);
+
+ /* Always sum border + padding */
+ GtkBorder padding;
+ GtkStateFlags state = gtk_style_context_get_state(context);
+ gtk_style_context_get_border(context, state,
+ &sWindowDecorationSize->decorationSize);
+ gtk_style_context_get_padding(context, state, &padding);
+ sWindowDecorationSize->decorationSize += padding;
+
+ // Available on GTK 3.20+.
+ static auto sGtkRenderBackgroundGetClip = (void (*)(
+ GtkStyleContext*, gdouble, gdouble, gdouble, gdouble,
+ GdkRectangle*))dlsym(RTLD_DEFAULT, "gtk_render_background_get_clip");
+
+ if (!sGtkRenderBackgroundGetClip) {
+ return;
+ }
+
+ GdkRectangle clip;
+ sGtkRenderBackgroundGetClip(context, 0, 0, 0, 0, &clip);
+
+ GtkBorder extents;
+ extents.top = -clip.y;
+ extents.right = clip.width + clip.x;
+ extents.bottom = clip.height + clip.y;
+ extents.left = -clip.x;
+
+ // Get shadow extents but combine with style margin; use the bigger value.
+ // Margin is used for resize grip size - it's not present on
+ // popup windows.
+ if (!aPopupWindow) {
+ GtkBorder margin;
+ gtk_style_context_get_margin(context, state, &margin);
+
+ extents.top = MAX(extents.top, margin.top);
+ extents.right = MAX(extents.right, margin.right);
+ extents.bottom = MAX(extents.bottom, margin.bottom);
+ extents.left = MAX(extents.left, margin.left);
+ }
+
+ sWindowDecorationSize->decorationSize += extents;
+}
+
+GtkBorder GetCSDDecorationSize(bool aIsPopup) {
+ auto metrics =
+ aIsPopup ? &sPopupWindowDecorationSize : &sToplevelWindowDecorationSize;
+ if (!metrics->initialized) {
+ InitWindowDecorationSize(metrics, aIsPopup);
+ metrics->initialized = true;
+ }
+ return metrics->decorationSize;
+}
+
+/* cairo_t *cr argument has to be a system-cairo. */
+gint moz_gtk_widget_paint(WidgetNodeType widget, cairo_t* cr,
+ GdkRectangle* rect, GtkWidgetState* state, gint flags,
+ GtkTextDirection direction) {
+ /* A workaround for https://bugzilla.gnome.org/show_bug.cgi?id=694086
+ */
+ cairo_new_path(cr);
+
+ switch (widget) {
+ case MOZ_GTK_BUTTON:
+ case MOZ_GTK_TOOLBAR_BUTTON:
+ if (state->depressed) {
+ return moz_gtk_button_paint(cr, rect, state, (GtkReliefStyle)flags,
+ GetWidget(MOZ_GTK_TOGGLE_BUTTON),
+ direction);
+ }
+ return moz_gtk_button_paint(cr, rect, state, (GtkReliefStyle)flags,
+ GetWidget(MOZ_GTK_BUTTON), direction);
+ case MOZ_GTK_HEADER_BAR_BUTTON_CLOSE:
+ case MOZ_GTK_HEADER_BAR_BUTTON_MINIMIZE:
+ case MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE:
+ case MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE_RESTORE:
+ return moz_gtk_header_bar_button_paint(
+ cr, rect, state, (GtkReliefStyle)flags, widget, direction);
+ case MOZ_GTK_CHECKBUTTON:
+ case MOZ_GTK_RADIOBUTTON:
+ return moz_gtk_toggle_paint(cr, rect, state,
+ !!(flags & MOZ_GTK_WIDGET_CHECKED),
+ !!(flags & MOZ_GTK_WIDGET_INCONSISTENT),
+ (widget == MOZ_GTK_RADIOBUTTON), direction);
+ case MOZ_GTK_SCALE_HORIZONTAL:
+ case MOZ_GTK_SCALE_VERTICAL:
+ return moz_gtk_scale_paint(cr, rect, state, (GtkOrientation)flags,
+ direction);
+ case MOZ_GTK_SCALE_THUMB_HORIZONTAL:
+ case MOZ_GTK_SCALE_THUMB_VERTICAL:
+ return moz_gtk_scale_thumb_paint(cr, rect, state, (GtkOrientation)flags,
+ direction);
+ case MOZ_GTK_INNER_SPIN_BUTTON:
+ return moz_gtk_inner_spin_paint(cr, rect, state, direction);
+ case MOZ_GTK_SPINBUTTON:
+ return moz_gtk_spin_paint(cr, rect, state, direction);
+ case MOZ_GTK_SPINBUTTON_UP:
+ case MOZ_GTK_SPINBUTTON_DOWN:
+ return moz_gtk_spin_updown_paint(
+ cr, rect, (widget == MOZ_GTK_SPINBUTTON_DOWN), state, direction);
+ case MOZ_GTK_SPINBUTTON_ENTRY: {
+ GtkStyleContext* style =
+ GetStyleContext(MOZ_GTK_SPINBUTTON_ENTRY, state->image_scale,
+ direction, GetStateFlagsFromGtkWidgetState(state));
+ return moz_gtk_entry_paint(cr, rect, state, style, widget);
+ }
+ case MOZ_GTK_TREEVIEW:
+ return moz_gtk_treeview_paint(cr, rect, state, direction);
+ case MOZ_GTK_TREE_HEADER_CELL:
+ return moz_gtk_tree_header_cell_paint(cr, rect, state, flags, direction);
+ case MOZ_GTK_TREEVIEW_EXPANDER:
+ return moz_gtk_treeview_expander_paint(
+ cr, rect, state, (GtkExpanderStyle)flags, direction);
+ case MOZ_GTK_ENTRY:
+ case MOZ_GTK_DROPDOWN_ENTRY: {
+ GtkStyleContext* style =
+ GetStyleContext(widget, state->image_scale, direction,
+ GetStateFlagsFromGtkWidgetState(state));
+ gint ret = moz_gtk_entry_paint(cr, rect, state, style, widget);
+ return ret;
+ }
+ case MOZ_GTK_TEXT_VIEW:
+ return moz_gtk_text_view_paint(cr, rect, state, direction);
+ case MOZ_GTK_DROPDOWN:
+ return moz_gtk_combo_box_paint(cr, rect, state, direction);
+ case MOZ_GTK_TOOLTIP:
+ return moz_gtk_tooltip_paint(cr, rect, state, direction);
+ case MOZ_GTK_FRAME:
+ return moz_gtk_frame_paint(cr, rect, state, direction);
+ case MOZ_GTK_RESIZER:
+ return moz_gtk_resizer_paint(cr, rect, state, direction);
+ case MOZ_GTK_PROGRESSBAR:
+ return moz_gtk_progressbar_paint(cr, rect, state, direction);
+ case MOZ_GTK_PROGRESS_CHUNK:
+ case MOZ_GTK_PROGRESS_CHUNK_INDETERMINATE:
+ case MOZ_GTK_PROGRESS_CHUNK_VERTICAL_INDETERMINATE:
+ return moz_gtk_progress_chunk_paint(cr, rect, state, direction, widget);
+ case MOZ_GTK_TAB_TOP:
+ case MOZ_GTK_TAB_BOTTOM:
+ return moz_gtk_tab_paint(cr, rect, state, (GtkTabFlags)flags, direction,
+ widget);
+ case MOZ_GTK_TABPANELS:
+ return moz_gtk_tabpanels_paint(cr, rect, state, direction);
+ case MOZ_GTK_TAB_SCROLLARROW:
+ return moz_gtk_tab_scroll_arrow_paint(cr, rect, state,
+ (GtkArrowType)flags, direction);
+ case MOZ_GTK_TOOLBARBUTTON_ARROW:
+ return moz_gtk_arrow_paint(cr, rect, state, (GtkArrowType)flags,
+ direction);
+ case MOZ_GTK_SPLITTER_HORIZONTAL:
+ return moz_gtk_vpaned_paint(cr, rect, state);
+ case MOZ_GTK_SPLITTER_VERTICAL:
+ return moz_gtk_hpaned_paint(cr, rect, state);
+ case MOZ_GTK_WINDOW_DECORATION:
+ return moz_gtk_window_decoration_paint(cr, rect, state, direction);
+ case MOZ_GTK_HEADER_BAR:
+ case MOZ_GTK_HEADER_BAR_MAXIMIZED:
+ return moz_gtk_header_bar_paint(widget, cr, rect, state);
+ default:
+ g_warning("Unknown widget type: %d", widget);
+ }
+
+ return MOZ_GTK_UNKNOWN_WIDGET;
+}
+
+gint moz_gtk_shutdown() {
+ /* This will destroy all of our widgets */
+ ResetWidgetCache();
+
+ return MOZ_GTK_SUCCESS;
+}