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-rw-r--r--app/tools/gimppainttool.c991
1 files changed, 991 insertions, 0 deletions
diff --git a/app/tools/gimppainttool.c b/app/tools/gimppainttool.c
new file mode 100644
index 0000000..48eb215
--- /dev/null
+++ b/app/tools/gimppainttool.c
@@ -0,0 +1,991 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "tools-types.h"
+
+#include "config/gimpdisplayconfig.h"
+#include "config/gimpguiconfig.h"
+
+#include "core/gimp.h"
+#include "core/gimp-utils.h"
+#include "core/gimpdrawable.h"
+#include "core/gimperror.h"
+#include "core/gimpimage.h"
+#include "core/gimplayer.h"
+#include "core/gimppaintinfo.h"
+#include "core/gimpprojection.h"
+#include "core/gimptoolinfo.h"
+
+#include "paint/gimppaintcore.h"
+#include "paint/gimppaintoptions.h"
+
+#include "widgets/gimpdevices.h"
+#include "widgets/gimpwidgets-utils.h"
+
+#include "display/gimpdisplay.h"
+#include "display/gimpdisplayshell.h"
+#include "display/gimpdisplayshell-selection.h"
+#include "display/gimpdisplayshell-utils.h"
+
+#include "gimpcoloroptions.h"
+#include "gimppaintoptions-gui.h"
+#include "gimppainttool.h"
+#include "gimppainttool-paint.h"
+#include "gimptoolcontrol.h"
+#include "gimptools-utils.h"
+
+#include "gimp-intl.h"
+
+
+static void gimp_paint_tool_constructed (GObject *object);
+static void gimp_paint_tool_finalize (GObject *object);
+
+static void gimp_paint_tool_control (GimpTool *tool,
+ GimpToolAction action,
+ GimpDisplay *display);
+static void gimp_paint_tool_button_press (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpDisplay *display);
+static void gimp_paint_tool_button_release (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonReleaseType release_type,
+ GimpDisplay *display);
+static void gimp_paint_tool_motion (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpDisplay *display);
+static void gimp_paint_tool_modifier_key (GimpTool *tool,
+ GdkModifierType key,
+ gboolean press,
+ GdkModifierType state,
+ GimpDisplay *display);
+static void gimp_paint_tool_cursor_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ GimpDisplay *display);
+static void gimp_paint_tool_oper_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ gboolean proximity,
+ GimpDisplay *display);
+
+static void gimp_paint_tool_draw (GimpDrawTool *draw_tool);
+
+static void
+ gimp_paint_tool_real_paint_prepare (GimpPaintTool *paint_tool,
+ GimpDisplay *display);
+
+static GimpCanvasItem *
+ gimp_paint_tool_get_outline (GimpPaintTool *paint_tool,
+ GimpDisplay *display,
+ gdouble x,
+ gdouble y);
+
+static gboolean gimp_paint_tool_check_alpha (GimpPaintTool *paint_tool,
+ GimpDrawable *drawable,
+ GimpDisplay *display,
+ GError **error);
+
+static void gimp_paint_tool_hard_notify (GimpPaintOptions *options,
+ const GParamSpec *pspec,
+ GimpPaintTool *paint_tool);
+static void gimp_paint_tool_cursor_notify (GimpDisplayConfig *config,
+ GParamSpec *pspec,
+ GimpPaintTool *paint_tool);
+
+
+G_DEFINE_TYPE (GimpPaintTool, gimp_paint_tool, GIMP_TYPE_COLOR_TOOL)
+
+#define parent_class gimp_paint_tool_parent_class
+
+
+static void
+gimp_paint_tool_class_init (GimpPaintToolClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
+ GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
+
+ object_class->constructed = gimp_paint_tool_constructed;
+ object_class->finalize = gimp_paint_tool_finalize;
+
+ tool_class->control = gimp_paint_tool_control;
+ tool_class->button_press = gimp_paint_tool_button_press;
+ tool_class->button_release = gimp_paint_tool_button_release;
+ tool_class->motion = gimp_paint_tool_motion;
+ tool_class->modifier_key = gimp_paint_tool_modifier_key;
+ tool_class->cursor_update = gimp_paint_tool_cursor_update;
+ tool_class->oper_update = gimp_paint_tool_oper_update;
+
+ draw_tool_class->draw = gimp_paint_tool_draw;
+
+ klass->paint_prepare = gimp_paint_tool_real_paint_prepare;
+}
+
+static void
+gimp_paint_tool_init (GimpPaintTool *paint_tool)
+{
+ GimpTool *tool = GIMP_TOOL (paint_tool);
+
+ gimp_tool_control_set_motion_mode (tool->control, GIMP_MOTION_MODE_EXACT);
+ gimp_tool_control_set_scroll_lock (tool->control, TRUE);
+ gimp_tool_control_set_action_opacity (tool->control,
+ "context/context-opacity-set");
+
+ paint_tool->active = TRUE;
+ paint_tool->pick_colors = FALSE;
+ paint_tool->draw_line = FALSE;
+
+ paint_tool->show_cursor = TRUE;
+ paint_tool->draw_brush = TRUE;
+ paint_tool->snap_brush = FALSE;
+ paint_tool->draw_fallback = FALSE;
+ paint_tool->fallback_size = 0.0;
+ paint_tool->draw_circle = FALSE;
+ paint_tool->circle_size = 0.0;
+
+ paint_tool->status = _("Click to paint");
+ paint_tool->status_line = _("Click to draw the line");
+ paint_tool->status_ctrl = _("%s to pick a color");
+
+ paint_tool->core = NULL;
+}
+
+static void
+gimp_paint_tool_constructed (GObject *object)
+{
+ GimpTool *tool = GIMP_TOOL (object);
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (object);
+ GimpPaintOptions *options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
+ GimpDisplayConfig *display_config;
+ GimpPaintInfo *paint_info;
+
+ G_OBJECT_CLASS (parent_class)->constructed (object);
+
+ gimp_assert (GIMP_IS_TOOL_INFO (tool->tool_info));
+ gimp_assert (GIMP_IS_PAINT_INFO (tool->tool_info->paint_info));
+
+ display_config = GIMP_DISPLAY_CONFIG (tool->tool_info->gimp->config);
+
+ paint_info = tool->tool_info->paint_info;
+
+ gimp_assert (g_type_is_a (paint_info->paint_type, GIMP_TYPE_PAINT_CORE));
+
+ paint_tool->core = g_object_new (paint_info->paint_type,
+ "undo-desc", paint_info->blurb,
+ NULL);
+
+ g_signal_connect_object (options, "notify::hard",
+ G_CALLBACK (gimp_paint_tool_hard_notify),
+ paint_tool, 0);
+
+ gimp_paint_tool_hard_notify (options, NULL, paint_tool);
+
+ paint_tool->show_cursor = display_config->show_paint_tool_cursor;
+ paint_tool->draw_brush = display_config->show_brush_outline;
+ paint_tool->snap_brush = display_config->snap_brush_outline;
+
+ g_signal_connect_object (display_config, "notify::show-paint-tool-cursor",
+ G_CALLBACK (gimp_paint_tool_cursor_notify),
+ paint_tool, 0);
+ g_signal_connect_object (display_config, "notify::show-brush-outline",
+ G_CALLBACK (gimp_paint_tool_cursor_notify),
+ paint_tool, 0);
+ g_signal_connect_object (display_config, "notify::snap-brush-outline",
+ G_CALLBACK (gimp_paint_tool_cursor_notify),
+ paint_tool, 0);
+}
+
+static void
+gimp_paint_tool_finalize (GObject *object)
+{
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (object);
+
+ if (paint_tool->core)
+ {
+ g_object_unref (paint_tool->core);
+ paint_tool->core = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_paint_tool_control (GimpTool *tool,
+ GimpToolAction action,
+ GimpDisplay *display)
+{
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+
+ switch (action)
+ {
+ case GIMP_TOOL_ACTION_PAUSE:
+ case GIMP_TOOL_ACTION_RESUME:
+ break;
+
+ case GIMP_TOOL_ACTION_HALT:
+ gimp_paint_core_cleanup (paint_tool->core);
+ break;
+
+ case GIMP_TOOL_ACTION_COMMIT:
+ break;
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
+}
+
+static void
+gimp_paint_tool_button_press (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpDisplay *display)
+{
+ GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+ GimpPaintOptions *options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
+ GimpGuiConfig *config = GIMP_GUI_CONFIG (display->gimp->config);
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+ GimpImage *image = gimp_display_get_image (display);
+ GimpDrawable *drawable = gimp_image_get_active_drawable (image);
+ gboolean constrain;
+ GError *error = NULL;
+
+ if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
+ {
+ GIMP_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
+ press_type, display);
+ return;
+ }
+
+ if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)))
+ {
+ gimp_tool_message_literal (tool, display,
+ _("Cannot paint on layer groups."));
+ return;
+ }
+
+ if (gimp_item_is_content_locked (GIMP_ITEM (drawable)))
+ {
+ gimp_tool_message_literal (tool, display,
+ _("The active layer's pixels are locked."));
+ gimp_tools_blink_lock_box (display->gimp, GIMP_ITEM (drawable));
+ return;
+ }
+
+ if (! gimp_paint_tool_check_alpha (paint_tool, drawable, display, &error))
+ {
+ GtkWidget *options_gui;
+ GtkWidget *mode_box;
+
+ gimp_tool_message_literal (tool, display, error->message);
+
+ options_gui = gimp_tools_get_tool_options_gui (
+ GIMP_TOOL_OPTIONS (options));
+ mode_box = gimp_paint_options_gui_get_paint_mode_box (options_gui);
+
+ if (gtk_widget_is_sensitive (mode_box))
+ gimp_widget_blink (mode_box);
+
+ g_clear_error (&error);
+
+ return;
+ }
+
+ if (! gimp_item_is_visible (GIMP_ITEM (drawable)) &&
+ ! config->edit_non_visible)
+ {
+ gimp_tool_message_literal (tool, display,
+ _("The active layer is not visible."));
+ return;
+ }
+
+ if (gimp_draw_tool_is_active (draw_tool))
+ gimp_draw_tool_stop (draw_tool);
+
+ if (tool->display &&
+ tool->display != display &&
+ gimp_display_get_image (tool->display) == image)
+ {
+ /* if this is a different display, but the same image, HACK around
+ * in tool internals AFTER stopping the current draw_tool, so
+ * straight line drawing works across different views of the
+ * same image.
+ */
+
+ tool->display = display;
+ }
+
+ constrain = (state & gimp_get_constrain_behavior_mask ()) != 0;
+
+ if (! gimp_paint_tool_paint_start (paint_tool,
+ display, coords, time, constrain,
+ &error))
+ {
+ gimp_tool_message_literal (tool, display, error->message);
+ g_clear_error (&error);
+ return;
+ }
+
+ tool->display = display;
+ tool->drawable = drawable;
+
+ /* pause the current selection */
+ gimp_display_shell_selection_pause (shell);
+
+ gimp_draw_tool_start (draw_tool, display);
+
+ gimp_tool_control_activate (tool->control);
+}
+
+static void
+gimp_paint_tool_button_release (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonReleaseType release_type,
+ GimpDisplay *display)
+{
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+ GimpImage *image = gimp_display_get_image (display);
+ gboolean cancel;
+
+ if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
+ {
+ GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time,
+ state, release_type,
+ display);
+ return;
+ }
+
+ cancel = (release_type == GIMP_BUTTON_RELEASE_CANCEL);
+
+ gimp_paint_tool_paint_end (paint_tool, time, cancel);
+
+ gimp_tool_control_halt (tool->control);
+
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+
+ /* resume the current selection */
+ gimp_display_shell_selection_resume (shell);
+
+ gimp_image_flush (image);
+
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+}
+
+static void
+gimp_paint_tool_motion (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpDisplay *display)
+{
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+
+ GIMP_TOOL_CLASS (parent_class)->motion (tool, coords, time, state, display);
+
+ if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
+ return;
+
+ if (! paint_tool->snap_brush)
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+
+ gimp_paint_tool_paint_motion (paint_tool, coords, time);
+
+ if (! paint_tool->snap_brush)
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+}
+
+static void
+gimp_paint_tool_modifier_key (GimpTool *tool,
+ GdkModifierType key,
+ gboolean press,
+ GdkModifierType state,
+ GimpDisplay *display)
+{
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+ GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
+
+ if (paint_tool->pick_colors && ! paint_tool->draw_line)
+ {
+ if ((state & gimp_get_all_modifiers_mask ()) ==
+ gimp_get_constrain_behavior_mask ())
+ {
+ if (! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
+ {
+ GimpToolInfo *info = gimp_get_tool_info (display->gimp,
+ "gimp-color-picker-tool");
+
+ if (GIMP_IS_TOOL_INFO (info))
+ {
+ if (gimp_draw_tool_is_active (draw_tool))
+ gimp_draw_tool_stop (draw_tool);
+
+ gimp_color_tool_enable (GIMP_COLOR_TOOL (tool),
+ GIMP_COLOR_OPTIONS (info->tool_options));
+
+ switch (GIMP_COLOR_TOOL (tool)->pick_target)
+ {
+ case GIMP_COLOR_PICK_TARGET_FOREGROUND:
+ gimp_tool_push_status (tool, display,
+ _("Click in any image to pick the "
+ "foreground color"));
+ break;
+
+ case GIMP_COLOR_PICK_TARGET_BACKGROUND:
+ gimp_tool_push_status (tool, display,
+ _("Click in any image to pick the "
+ "background color"));
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+ }
+ else
+ {
+ if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
+ {
+ gimp_tool_pop_status (tool, display);
+ gimp_color_tool_disable (GIMP_COLOR_TOOL (tool));
+ }
+ }
+ }
+}
+
+static void
+gimp_paint_tool_cursor_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ GimpDisplay *display)
+{
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+ GimpGuiConfig *config = GIMP_GUI_CONFIG (display->gimp->config);
+ GimpCursorModifier modifier;
+ GimpCursorModifier toggle_modifier;
+ GimpCursorModifier old_modifier;
+ GimpCursorModifier old_toggle_modifier;
+
+ modifier = tool->control->cursor_modifier;
+ toggle_modifier = tool->control->toggle_cursor_modifier;
+
+ old_modifier = modifier;
+ old_toggle_modifier = toggle_modifier;
+
+ if (! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
+ {
+ GimpImage *image = gimp_display_get_image (display);
+ GimpDrawable *drawable = gimp_image_get_active_drawable (image);
+
+ if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)) ||
+ gimp_item_is_content_locked (GIMP_ITEM (drawable)) ||
+ ! gimp_paint_tool_check_alpha (paint_tool, drawable, display, NULL) ||
+ ! (gimp_item_is_visible (GIMP_ITEM (drawable)) ||
+ config->edit_non_visible))
+ {
+ modifier = GIMP_CURSOR_MODIFIER_BAD;
+ toggle_modifier = GIMP_CURSOR_MODIFIER_BAD;
+ }
+
+ if (! paint_tool->show_cursor &&
+ modifier != GIMP_CURSOR_MODIFIER_BAD)
+ {
+ gimp_tool_set_cursor (tool, display,
+ GIMP_CURSOR_NONE,
+ GIMP_TOOL_CURSOR_NONE,
+ GIMP_CURSOR_MODIFIER_NONE);
+ return;
+ }
+
+ gimp_tool_control_set_cursor_modifier (tool->control,
+ modifier);
+ gimp_tool_control_set_toggle_cursor_modifier (tool->control,
+ toggle_modifier);
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state,
+ display);
+
+ /* reset old stuff here so we are not interfering with the modifiers
+ * set by our subclasses
+ */
+ gimp_tool_control_set_cursor_modifier (tool->control,
+ old_modifier);
+ gimp_tool_control_set_toggle_cursor_modifier (tool->control,
+ old_toggle_modifier);
+}
+
+static void
+gimp_paint_tool_oper_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ gboolean proximity,
+ GimpDisplay *display)
+{
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+ GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
+ GimpPaintOptions *paint_options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
+ GimpPaintCore *core = paint_tool->core;
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+ GimpImage *image = gimp_display_get_image (display);
+ GimpDrawable *drawable = gimp_image_get_active_drawable (image);
+
+ if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
+ {
+ GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state,
+ proximity, display);
+ return;
+ }
+
+ gimp_draw_tool_pause (draw_tool);
+
+ if (gimp_draw_tool_is_active (draw_tool) &&
+ draw_tool->display != display)
+ gimp_draw_tool_stop (draw_tool);
+
+ gimp_tool_pop_status (tool, display);
+
+ if (tool->display &&
+ tool->display != display &&
+ gimp_display_get_image (tool->display) == image)
+ {
+ /* if this is a different display, but the same image, HACK around
+ * in tool internals AFTER stopping the current draw_tool, so
+ * straight line drawing works across different views of the
+ * same image.
+ */
+
+ tool->display = display;
+ }
+
+ if (drawable && proximity)
+ {
+ gchar *status;
+ gboolean constrain_mask = gimp_get_constrain_behavior_mask ();
+ gint off_x, off_y;
+
+ core->cur_coords = *coords;
+
+ gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
+
+ core->cur_coords.x -= off_x;
+ core->cur_coords.y -= off_y;
+
+ if (display == tool->display && (state & GIMP_PAINT_TOOL_LINE_MASK))
+ {
+ /* If shift is down and this is not the first paint stroke,
+ * draw a line.
+ */
+ gchar *status_help;
+ gdouble offset_angle;
+ gdouble xres, yres;
+
+ gimp_display_shell_get_constrained_line_params (shell,
+ &offset_angle,
+ &xres, &yres);
+
+ gimp_paint_core_round_line (core, paint_options,
+ (state & constrain_mask) != 0,
+ offset_angle, xres, yres);
+
+ status_help = gimp_suggest_modifiers (paint_tool->status_line,
+ constrain_mask & ~state,
+ NULL,
+ _("%s for constrained angles"),
+ NULL);
+
+ status = gimp_display_shell_get_line_status (shell, status_help,
+ ". ",
+ core->last_coords.x,
+ core->last_coords.y,
+ core->cur_coords.x,
+ core->cur_coords.y);
+ g_free (status_help);
+ paint_tool->draw_line = TRUE;
+ }
+ else
+ {
+ GdkModifierType modifiers = 0;
+
+ /* HACK: A paint tool may set status_ctrl to NULL to indicate that
+ * it ignores the Ctrl modifier (temporarily or permanently), so
+ * it should not be suggested. This is different from how
+ * gimp_suggest_modifiers() would interpret this parameter.
+ */
+ if (paint_tool->status_ctrl != NULL)
+ modifiers |= constrain_mask;
+
+ /* suggest drawing lines only after the first point is set
+ */
+ if (display == tool->display)
+ modifiers |= GIMP_PAINT_TOOL_LINE_MASK;
+
+ status = gimp_suggest_modifiers (paint_tool->status,
+ modifiers & ~state,
+ _("%s for a straight line"),
+ paint_tool->status_ctrl,
+ NULL);
+ paint_tool->draw_line = FALSE;
+ }
+ gimp_tool_push_status (tool, display, "%s", status);
+ g_free (status);
+
+ paint_tool->cursor_x = core->cur_coords.x;
+ paint_tool->cursor_y = core->cur_coords.y;
+
+ if (! gimp_draw_tool_is_active (draw_tool))
+ gimp_draw_tool_start (draw_tool, display);
+ }
+ else if (gimp_draw_tool_is_active (draw_tool))
+ {
+ gimp_draw_tool_stop (draw_tool);
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
+ display);
+
+ gimp_draw_tool_resume (draw_tool);
+}
+
+static void
+gimp_paint_tool_draw (GimpDrawTool *draw_tool)
+{
+ GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (draw_tool);
+
+
+ if (paint_tool->active &&
+ ! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (draw_tool)))
+ {
+ GimpPaintCore *core = paint_tool->core;
+ GimpImage *image = gimp_display_get_image (draw_tool->display);
+ GimpDrawable *drawable = gimp_image_get_active_drawable (image);
+ GimpCanvasItem *outline = NULL;
+ gboolean line_drawn = FALSE;
+ gdouble cur_x, cur_y;
+ gint off_x, off_y;
+
+ gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
+
+ if (gimp_paint_tool_paint_is_active (paint_tool) &&
+ paint_tool->snap_brush)
+ {
+ cur_x = paint_tool->paint_x + off_x;
+ cur_y = paint_tool->paint_y + off_y;
+ }
+ else
+ {
+ cur_x = paint_tool->cursor_x + off_x;
+ cur_y = paint_tool->cursor_y + off_y;
+
+ if (paint_tool->draw_line &&
+ ! gimp_tool_control_is_active (GIMP_TOOL (draw_tool)->control))
+ {
+ GimpCanvasGroup *group;
+ gdouble last_x, last_y;
+
+ last_x = core->last_coords.x + off_x;
+ last_y = core->last_coords.y + off_y;
+
+ group = gimp_draw_tool_add_stroke_group (draw_tool);
+ gimp_draw_tool_push_group (draw_tool, group);
+
+ gimp_draw_tool_add_handle (draw_tool,
+ GIMP_HANDLE_CIRCLE,
+ last_x, last_y,
+ GIMP_TOOL_HANDLE_SIZE_CIRCLE,
+ GIMP_TOOL_HANDLE_SIZE_CIRCLE,
+ GIMP_HANDLE_ANCHOR_CENTER);
+
+ gimp_draw_tool_add_line (draw_tool,
+ last_x, last_y,
+ cur_x, cur_y);
+
+ gimp_draw_tool_add_handle (draw_tool,
+ GIMP_HANDLE_CIRCLE,
+ cur_x, cur_y,
+ GIMP_TOOL_HANDLE_SIZE_CIRCLE,
+ GIMP_TOOL_HANDLE_SIZE_CIRCLE,
+ GIMP_HANDLE_ANCHOR_CENTER);
+
+ gimp_draw_tool_pop_group (draw_tool);
+
+ line_drawn = TRUE;
+ }
+ }
+
+ gimp_paint_tool_set_draw_fallback (paint_tool, FALSE, 0.0);
+
+ if (paint_tool->draw_brush)
+ outline = gimp_paint_tool_get_outline (paint_tool,
+ draw_tool->display,
+ cur_x, cur_y);
+
+ if (outline)
+ {
+ gimp_draw_tool_add_item (draw_tool, outline);
+ g_object_unref (outline);
+ }
+ else if (paint_tool->draw_fallback)
+ {
+ /* Lets make a sensible fallback cursor
+ *
+ * Sensible cursor is
+ * * crossed to indicate draw point
+ * * reactive to options alterations
+ * * not a full circle that would be in the way
+ */
+ gint size = (gint) paint_tool->fallback_size;
+
+#define TICKMARK_ANGLE 48
+#define ROTATION_ANGLE G_PI / 4
+
+ /* marks for indicating full size */
+ gimp_draw_tool_add_arc (draw_tool,
+ FALSE,
+ cur_x - (size / 2.0),
+ cur_y - (size / 2.0),
+ size, size,
+ ROTATION_ANGLE - (2.0 * G_PI) / (TICKMARK_ANGLE * 2),
+ (2.0 * G_PI) / TICKMARK_ANGLE);
+
+ gimp_draw_tool_add_arc (draw_tool,
+ FALSE,
+ cur_x - (size / 2.0),
+ cur_y - (size / 2.0),
+ size, size,
+ ROTATION_ANGLE + G_PI / 2 - (2.0 * G_PI) / (TICKMARK_ANGLE * 2),
+ (2.0 * G_PI) / TICKMARK_ANGLE);
+
+ gimp_draw_tool_add_arc (draw_tool,
+ FALSE,
+ cur_x - (size / 2.0),
+ cur_y - (size / 2.0),
+ size, size,
+ ROTATION_ANGLE + G_PI - (2.0 * G_PI) / (TICKMARK_ANGLE * 2),
+ (2.0 * G_PI) / TICKMARK_ANGLE);
+
+ gimp_draw_tool_add_arc (draw_tool,
+ FALSE,
+ cur_x - (size / 2.0),
+ cur_y - (size / 2.0),
+ size, size,
+ ROTATION_ANGLE + 3 * G_PI / 2 - (2.0 * G_PI) / (TICKMARK_ANGLE * 2),
+ (2.0 * G_PI) / TICKMARK_ANGLE);
+ }
+ else if (paint_tool->draw_circle)
+ {
+ gint size = (gint) paint_tool->circle_size;
+
+ /* draw an indicatory circle */
+ gimp_draw_tool_add_arc (draw_tool,
+ FALSE,
+ cur_x - (size / 2.0),
+ cur_y - (size / 2.0),
+ size, size,
+ 0.0, (2.0 * G_PI));
+ }
+
+ if (! outline &&
+ ! line_drawn &&
+ ! paint_tool->show_cursor &&
+ ! paint_tool->draw_circle)
+ {
+ /* don't leave the user without any indication and draw
+ * a fallback crosshair
+ */
+ gimp_draw_tool_add_handle (draw_tool,
+ GIMP_HANDLE_CROSSHAIR,
+ cur_x, cur_y,
+ GIMP_TOOL_HANDLE_SIZE_CROSSHAIR,
+ GIMP_TOOL_HANDLE_SIZE_CROSSHAIR,
+ GIMP_HANDLE_ANCHOR_CENTER);
+ }
+ }
+
+ GIMP_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
+}
+
+static void
+gimp_paint_tool_real_paint_prepare (GimpPaintTool *paint_tool,
+ GimpDisplay *display)
+{
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+
+ gimp_paint_core_set_show_all (paint_tool->core, shell->show_all);
+}
+
+static GimpCanvasItem *
+gimp_paint_tool_get_outline (GimpPaintTool *paint_tool,
+ GimpDisplay *display,
+ gdouble x,
+ gdouble y)
+{
+ if (GIMP_PAINT_TOOL_GET_CLASS (paint_tool)->get_outline)
+ return GIMP_PAINT_TOOL_GET_CLASS (paint_tool)->get_outline (paint_tool,
+ display, x, y);
+
+ return NULL;
+}
+
+static gboolean
+gimp_paint_tool_check_alpha (GimpPaintTool *paint_tool,
+ GimpDrawable *drawable,
+ GimpDisplay *display,
+ GError **error)
+{
+ GimpPaintToolClass *klass = GIMP_PAINT_TOOL_GET_CLASS (paint_tool);
+
+ if (klass->is_alpha_only && klass->is_alpha_only (paint_tool, drawable))
+ {
+ if (! gimp_drawable_has_alpha (drawable))
+ {
+ g_set_error_literal (
+ error, GIMP_ERROR, GIMP_FAILED,
+ _("The active layer does not have an alpha channel."));
+
+ return FALSE;
+ }
+
+ if (GIMP_IS_LAYER (drawable) &&
+ gimp_layer_get_lock_alpha (GIMP_LAYER (drawable)))
+ {
+ g_set_error_literal (
+ error, GIMP_ERROR, GIMP_FAILED,
+ _("The active layer's alpha channel is locked."));
+
+ if (error)
+ gimp_tools_blink_lock_box (display->gimp, GIMP_ITEM (drawable));
+
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+static void
+gimp_paint_tool_hard_notify (GimpPaintOptions *options,
+ const GParamSpec *pspec,
+ GimpPaintTool *paint_tool)
+{
+ if (paint_tool->active)
+ {
+ GimpTool *tool = GIMP_TOOL (paint_tool);
+
+ gimp_tool_control_set_precision (tool->control,
+ options->hard ?
+ GIMP_CURSOR_PRECISION_PIXEL_CENTER :
+ GIMP_CURSOR_PRECISION_SUBPIXEL);
+ }
+}
+
+static void
+gimp_paint_tool_cursor_notify (GimpDisplayConfig *config,
+ GParamSpec *pspec,
+ GimpPaintTool *paint_tool)
+{
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (paint_tool));
+
+ paint_tool->show_cursor = config->show_paint_tool_cursor;
+ paint_tool->draw_brush = config->show_brush_outline;
+ paint_tool->snap_brush = config->snap_brush_outline;
+
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (paint_tool));
+}
+
+void
+gimp_paint_tool_set_active (GimpPaintTool *tool,
+ gboolean active)
+{
+ g_return_if_fail (GIMP_IS_PAINT_TOOL (tool));
+
+ if (active != tool->active)
+ {
+ GimpPaintOptions *options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
+
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+
+ tool->active = active;
+
+ if (active)
+ gimp_paint_tool_hard_notify (options, NULL, tool);
+
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+ }
+}
+
+/**
+ * gimp_paint_tool_enable_color_picker:
+ * @tool: a #GimpPaintTool
+ * @target: the #GimpColorPickTarget to set
+ *
+ * This is a convenience function used from the init method of paint
+ * tools that want the color picking functionality. The @mode that is
+ * set here is used to decide what cursor modifier to draw and if the
+ * picked color goes to the foreground or background color.
+ **/
+void
+gimp_paint_tool_enable_color_picker (GimpPaintTool *tool,
+ GimpColorPickTarget target)
+{
+ g_return_if_fail (GIMP_IS_PAINT_TOOL (tool));
+
+ tool->pick_colors = TRUE;
+
+ GIMP_COLOR_TOOL (tool)->pick_target = target;
+}
+
+void
+gimp_paint_tool_set_draw_fallback (GimpPaintTool *tool,
+ gboolean draw_fallback,
+ gint fallback_size)
+{
+ g_return_if_fail (GIMP_IS_PAINT_TOOL (tool));
+
+ tool->draw_fallback = draw_fallback;
+ tool->fallback_size = fallback_size;
+}
+
+void
+gimp_paint_tool_set_draw_circle (GimpPaintTool *tool,
+ gboolean draw_circle,
+ gint circle_size)
+{
+ g_return_if_fail (GIMP_IS_PAINT_TOOL (tool));
+
+ tool->draw_circle = draw_circle;
+ tool->circle_size = circle_size;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 12:13:50 +0000