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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
commit | 5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch) | |
tree | cbffb45144febf451e54061db2b21395faf94bfe /libgimp/gimppatternselectbutton.c | |
parent | Initial commit. (diff) | |
download | gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.tar.xz gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.zip |
Adding upstream version 2.10.34.upstream/2.10.34upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | libgimp/gimppatternselectbutton.c | 730 |
1 files changed, 730 insertions, 0 deletions
diff --git a/libgimp/gimppatternselectbutton.c b/libgimp/gimppatternselectbutton.c new file mode 100644 index 0000000..af37fad --- /dev/null +++ b/libgimp/gimppatternselectbutton.c @@ -0,0 +1,730 @@ +/* LIBGIMP - The GIMP Library + * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball + * + * gimppatternselectbutton.c + * Copyright (C) 1998 Andy Thomas + * + * This library is free software: you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 3 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gegl.h> +#include <gtk/gtk.h> + +#include "libgimpwidgets/gimpwidgets.h" + +#include "gimp.h" + +#include "gimpuitypes.h" +#include "gimppatternselectbutton.h" +#include "gimpuimarshal.h" + +#include "libgimp-intl.h" + + +/** + * SECTION: gimppatternselectbutton + * @title: GimpPatternSelectButton + * @short_description: A button which pops up a pattern select dialog. + * + * A button which pops up a pattern select dialog. + **/ + + +#define CELL_SIZE 20 + + +#define GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE(obj) ((GimpPatternSelectButtonPrivate *) gimp_pattern_select_button_get_instance_private ((GimpPatternSelectButton *) (obj))) + +typedef struct _GimpPatternSelectButtonPrivate GimpPatternSelectButtonPrivate; + +struct _GimpPatternSelectButtonPrivate +{ + gchar *title; + + gchar *pattern_name; /* Local copy */ + gint width; + gint height; + gint bytes; + guchar *mask_data; /* local copy */ + + GtkWidget *inside; + GtkWidget *preview; + GtkWidget *popup; +}; + +enum +{ + PATTERN_SET, + LAST_SIGNAL +}; + +enum +{ + PROP_0, + PROP_TITLE, + PROP_PATTERN_NAME +}; + + +/* local function prototypes */ + +static void gimp_pattern_select_button_finalize (GObject *object); + +static void gimp_pattern_select_button_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_pattern_select_button_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); + +static void gimp_pattern_select_button_clicked (GimpPatternSelectButton *button); + +static void gimp_pattern_select_button_callback (const gchar *pattern_name, + gint width, + gint height, + gint bytes, + const guchar *mask_data, + gboolean dialog_closing, + gpointer user_data); + +static void gimp_pattern_select_preview_resize (GimpPatternSelectButton *button); +static gboolean gimp_pattern_select_preview_events (GtkWidget *widget, + GdkEvent *event, + GimpPatternSelectButton *button); +static void gimp_pattern_select_preview_update (GtkWidget *preview, + gint width, + gint height, + gint bytes, + const guchar *mask_data); + +static void gimp_pattern_select_button_open_popup (GimpPatternSelectButton *button, + gint x, + gint y); +static void gimp_pattern_select_button_close_popup (GimpPatternSelectButton *button); + +static void gimp_pattern_select_drag_data_received (GimpPatternSelectButton *button, + GdkDragContext *context, + gint x, + gint y, + GtkSelectionData *selection, + guint info, + guint time); + +static GtkWidget * gimp_pattern_select_button_create_inside (GimpPatternSelectButton *button); + + +static const GtkTargetEntry target = { "application/x-gimp-pattern-name", 0 }; + +static guint pattern_button_signals[LAST_SIGNAL] = { 0 }; + + +G_DEFINE_TYPE_WITH_PRIVATE (GimpPatternSelectButton, gimp_pattern_select_button, + GIMP_TYPE_SELECT_BUTTON) + +static void +gimp_pattern_select_button_class_init (GimpPatternSelectButtonClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpSelectButtonClass *select_button_class = GIMP_SELECT_BUTTON_CLASS (klass); + + object_class->finalize = gimp_pattern_select_button_finalize; + object_class->set_property = gimp_pattern_select_button_set_property; + object_class->get_property = gimp_pattern_select_button_get_property; + + select_button_class->select_destroy = gimp_pattern_select_destroy; + + klass->pattern_set = NULL; + + /** + * GimpPatternSelectButton:title: + * + * The title to be used for the pattern selection popup dialog. + * + * Since: 2.4 + */ + g_object_class_install_property (object_class, PROP_TITLE, + g_param_spec_string ("title", + "Title", + "The title to be used for the pattern selection popup dialog", + _("Pattern Selection"), + GIMP_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY)); + + /** + * GimpPatternSelectButton:pattern-name: + * + * The name of the currently selected pattern. + * + * Since: 2.4 + */ + g_object_class_install_property (object_class, PROP_PATTERN_NAME, + g_param_spec_string ("pattern-name", + "Pattern name", + "The name of the currently selected pattern", + NULL, + GIMP_PARAM_READWRITE)); + + /** + * GimpPatternSelectButton::pattern-set: + * @widget: the object which received the signal. + * @pattern_name: the name of the currently selected pattern. + * @width: width of the pattern + * @height: height of the pattern + * @bpp: bpp of the pattern + * @mask_data: pattern mask data + * @dialog_closing: whether the dialog was closed or not. + * + * The ::pattern-set signal is emitted when the user selects a pattern. + * + * Since: 2.4 + */ + pattern_button_signals[PATTERN_SET] = + g_signal_new ("pattern-set", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (GimpPatternSelectButtonClass, pattern_set), + NULL, NULL, + _gimpui_marshal_VOID__STRING_INT_INT_INT_POINTER_BOOLEAN, + G_TYPE_NONE, 6, + G_TYPE_STRING, + G_TYPE_INT, + G_TYPE_INT, + G_TYPE_INT, + G_TYPE_POINTER, + G_TYPE_BOOLEAN); +} + +static void +gimp_pattern_select_button_init (GimpPatternSelectButton *button) +{ + GimpPatternSelectButtonPrivate *priv; + gint mask_data_size; + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + + priv->pattern_name = gimp_context_get_pattern (); + gimp_pattern_get_pixels (priv->pattern_name, + &priv->width, + &priv->height, + &priv->bytes, + &mask_data_size, + &priv->mask_data); + + priv->inside = gimp_pattern_select_button_create_inside (button); + gtk_container_add (GTK_CONTAINER (button), priv->inside); + + priv->popup = NULL; +} + +/** + * gimp_pattern_select_button_new: + * @title: Title of the dialog to use or %NULL to use the default title. + * @pattern_name: Initial pattern name or %NULL to use current selection. + * + * Creates a new #GtkWidget that completely controls the selection of + * a pattern. This widget is suitable for placement in a table in a + * plug-in dialog. + * + * Returns: A #GtkWidget that you can use in your UI. + * + * Since: 2.4 + */ +GtkWidget * +gimp_pattern_select_button_new (const gchar *title, + const gchar *pattern_name) +{ + GtkWidget *button; + + if (title) + button = g_object_new (GIMP_TYPE_PATTERN_SELECT_BUTTON, + "title", title, + "pattern-name", pattern_name, + NULL); + else + button = g_object_new (GIMP_TYPE_PATTERN_SELECT_BUTTON, + "pattern-name", pattern_name, + NULL); + + return button; +} + +/** + * gimp_pattern_select_button_get_pattern: + * @button: A #GimpPatternSelectButton + * + * Retrieves the name of currently selected pattern. + * + * Returns: an internal copy of the pattern name which must not be freed. + * + * Since: 2.4 + */ +const gchar * +gimp_pattern_select_button_get_pattern (GimpPatternSelectButton *button) +{ + GimpPatternSelectButtonPrivate *priv; + + g_return_val_if_fail (GIMP_IS_PATTERN_SELECT_BUTTON (button), NULL); + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + return priv->pattern_name; +} + +/** + * gimp_pattern_select_button_set_pattern: + * @button: A #GimpPatternSelectButton + * @pattern_name: Pattern name to set; %NULL means no change. + * + * Sets the current pattern for the pattern select button. + * + * Since: 2.4 + */ +void +gimp_pattern_select_button_set_pattern (GimpPatternSelectButton *button, + const gchar *pattern_name) +{ + GimpSelectButton *select_button; + + g_return_if_fail (GIMP_IS_PATTERN_SELECT_BUTTON (button)); + + select_button = GIMP_SELECT_BUTTON (button); + + if (select_button->temp_callback) + { + gimp_patterns_set_popup (select_button->temp_callback, pattern_name); + } + else + { + gchar *name; + gint width; + gint height; + gint bytes; + gint mask_data_size; + guint8 *mask_data; + + if (pattern_name && *pattern_name) + name = g_strdup (pattern_name); + else + name = gimp_context_get_pattern (); + + if (gimp_pattern_get_pixels (name, + &width, + &height, + &bytes, + &mask_data_size, + &mask_data)) + { + gimp_pattern_select_button_callback (name, + width, height, bytes, mask_data, + FALSE, button); + + g_free (mask_data); + } + + g_free (name); + } +} + + +/* private functions */ + +static void +gimp_pattern_select_button_finalize (GObject *object) +{ + GimpPatternSelectButtonPrivate *priv; + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (object); + + g_clear_pointer (&priv->pattern_name, g_free); + g_clear_pointer (&priv->mask_data, g_free); + g_clear_pointer (&priv->title, g_free); + + G_OBJECT_CLASS (gimp_pattern_select_button_parent_class)->finalize (object); +} + +static void +gimp_pattern_select_button_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpPatternSelectButton *button; + GimpPatternSelectButtonPrivate *priv; + + button = GIMP_PATTERN_SELECT_BUTTON (object); + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + + switch (property_id) + { + case PROP_TITLE: + priv->title = g_value_dup_string (value); + break; + case PROP_PATTERN_NAME: + gimp_pattern_select_button_set_pattern (button, + g_value_get_string (value)); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_pattern_select_button_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpPatternSelectButton *button; + GimpPatternSelectButtonPrivate *priv; + + button = GIMP_PATTERN_SELECT_BUTTON (object); + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + + switch (property_id) + { + case PROP_TITLE: + g_value_set_string (value, priv->title); + break; + case PROP_PATTERN_NAME: + g_value_set_string (value, priv->pattern_name); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_pattern_select_button_callback (const gchar *pattern_name, + gint width, + gint height, + gint bytes, + const guchar *mask_data, + gboolean dialog_closing, + gpointer user_data) +{ + GimpPatternSelectButton *button; + GimpPatternSelectButtonPrivate *priv; + GimpSelectButton *select_button; + + button = GIMP_PATTERN_SELECT_BUTTON (user_data); + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + select_button = GIMP_SELECT_BUTTON (button); + + g_free (priv->pattern_name); + g_free (priv->mask_data); + + priv->pattern_name = g_strdup (pattern_name); + priv->width = width; + priv->height = height; + priv->bytes = bytes; + priv->mask_data = g_memdup (mask_data, width * height * bytes); + + gimp_pattern_select_preview_update (priv->preview, + width, height, bytes, mask_data); + + if (dialog_closing) + select_button->temp_callback = NULL; + + g_signal_emit (button, pattern_button_signals[PATTERN_SET], 0, + pattern_name, width, height, bytes, dialog_closing); + g_object_notify (G_OBJECT (button), "pattern-name"); +} + +static void +gimp_pattern_select_button_clicked (GimpPatternSelectButton *button) +{ + GimpPatternSelectButtonPrivate *priv; + GimpSelectButton *select_button; + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + select_button = GIMP_SELECT_BUTTON (button); + + if (select_button->temp_callback) + { + /* calling gimp_patterns_set_popup() raises the dialog */ + gimp_patterns_set_popup (select_button->temp_callback, + priv->pattern_name); + } + else + { + select_button->temp_callback = + gimp_pattern_select_new (priv->title, priv->pattern_name, + gimp_pattern_select_button_callback, + button); + } +} + +static void +gimp_pattern_select_preview_resize (GimpPatternSelectButton *button) +{ + GimpPatternSelectButtonPrivate *priv; + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + + if (priv->width > 0 && priv->height > 0) + gimp_pattern_select_preview_update (priv->preview, + priv->width, + priv->height, + priv->bytes, + priv->mask_data); +} + +static gboolean +gimp_pattern_select_preview_events (GtkWidget *widget, + GdkEvent *event, + GimpPatternSelectButton *button) +{ + GimpPatternSelectButtonPrivate *priv; + GdkEventButton *bevent; + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + + if (priv->mask_data) + { + switch (event->type) + { + case GDK_BUTTON_PRESS: + bevent = (GdkEventButton *) event; + + if (bevent->button == 1) + { + gtk_grab_add (widget); + gimp_pattern_select_button_open_popup (button, + bevent->x, bevent->y); + } + break; + + case GDK_BUTTON_RELEASE: + bevent = (GdkEventButton *) event; + + if (bevent->button == 1) + { + gtk_grab_remove (widget); + gimp_pattern_select_button_close_popup (button); + } + break; + + default: + break; + } + } + + return FALSE; +} + +static void +gimp_pattern_select_preview_update (GtkWidget *preview, + gint width, + gint height, + gint bytes, + const guchar *mask_data) +{ + GimpImageType type; + + switch (bytes) + { + case 1: type = GIMP_GRAY_IMAGE; break; + case 2: type = GIMP_GRAYA_IMAGE; break; + case 3: type = GIMP_RGB_IMAGE; break; + case 4: type = GIMP_RGBA_IMAGE; break; + default: + return; + } + + gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview), + 0, 0, width, height, + type, + mask_data, + width * bytes); +} + +static void +gimp_pattern_select_button_open_popup (GimpPatternSelectButton *button, + gint x, + gint y) +{ + GimpPatternSelectButtonPrivate *priv; + GtkWidget *frame; + GtkWidget *preview; + GdkScreen *screen; + gint x_org; + gint y_org; + gint scr_w; + gint scr_h; + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + + if (priv->popup) + gimp_pattern_select_button_close_popup (button); + + if (priv->width <= CELL_SIZE && priv->height <= CELL_SIZE) + return; + + screen = gtk_widget_get_screen (GTK_WIDGET (button)); + + priv->popup = gtk_window_new (GTK_WINDOW_POPUP); + gtk_window_set_type_hint (GTK_WINDOW (priv->popup), GDK_WINDOW_TYPE_HINT_DND); + gtk_window_set_screen (GTK_WINDOW (priv->popup), screen); + + frame = gtk_frame_new (NULL); + gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT); + gtk_container_add (GTK_CONTAINER (priv->popup), frame); + gtk_widget_show (frame); + + preview = gimp_preview_area_new (); + gtk_widget_set_size_request (preview, priv->width, priv->height); + gtk_container_add (GTK_CONTAINER (frame), preview); + gtk_widget_show (preview); + + /* decide where to put the popup */ + gdk_window_get_origin (gtk_widget_get_window (priv->preview), + &x_org, &y_org); + + scr_w = gdk_screen_get_width (screen); + scr_h = gdk_screen_get_height (screen); + + x = x_org + x - (priv->width / 2); + y = y_org + y - (priv->height / 2); + x = (x < 0) ? 0 : x; + y = (y < 0) ? 0 : y; + x = (x + priv->width > scr_w) ? scr_w - priv->width : x; + y = (y + priv->height > scr_h) ? scr_h - priv->height : y; + + gtk_window_move (GTK_WINDOW (priv->popup), x, y); + + gtk_widget_show (priv->popup); + + /* Draw the pattern */ + gimp_pattern_select_preview_update (preview, + priv->width, + priv->height, + priv->bytes, + priv->mask_data); +} + +static void +gimp_pattern_select_button_close_popup (GimpPatternSelectButton *button) +{ + GimpPatternSelectButtonPrivate *priv; + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button); + + if (priv->popup) + { + gtk_widget_destroy (priv->popup); + priv->popup = NULL; + } +} + +static void +gimp_pattern_select_drag_data_received (GimpPatternSelectButton *button, + GdkDragContext *context, + gint x, + gint y, + GtkSelectionData *selection, + guint info, + guint time) +{ + gint length = gtk_selection_data_get_length (selection); + gchar *str; + + if (gtk_selection_data_get_format (selection) != 8 || length < 1) + { + g_warning ("Received invalid pattern data!"); + return; + } + + str = g_strndup ((const gchar *) gtk_selection_data_get_data (selection), + length); + + if (g_utf8_validate (str, -1, NULL)) + { + gint pid; + gpointer unused; + gint name_offset = 0; + + if (sscanf (str, "%i:%p:%n", &pid, &unused, &name_offset) >= 2 && + pid == gimp_getpid () && name_offset > 0) + { + gchar *name = str + name_offset; + + gimp_pattern_select_button_set_pattern (button, name); + } + } + + g_free (str); +} + +static GtkWidget * +gimp_pattern_select_button_create_inside (GimpPatternSelectButton *pattern_button) +{ + GtkWidget *hbox; + GtkWidget *frame; + GtkWidget *button; + GimpPatternSelectButtonPrivate *priv; + + priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (pattern_button); + + gtk_widget_push_composite_child (); + + hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6); + + frame = gtk_frame_new (NULL); + gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); + gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, FALSE, 0); + + priv->preview = gimp_preview_area_new (); + gtk_widget_add_events (priv->preview, + GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK); + gtk_widget_set_size_request (priv->preview, CELL_SIZE, CELL_SIZE); + gtk_container_add (GTK_CONTAINER (frame), priv->preview); + + g_signal_connect_swapped (priv->preview, "size-allocate", + G_CALLBACK (gimp_pattern_select_preview_resize), + pattern_button); + g_signal_connect (priv->preview, "event", + G_CALLBACK (gimp_pattern_select_preview_events), + pattern_button); + + gtk_drag_dest_set (GTK_WIDGET (priv->preview), + GTK_DEST_DEFAULT_HIGHLIGHT | + GTK_DEST_DEFAULT_MOTION | + GTK_DEST_DEFAULT_DROP, + &target, 1, + GDK_ACTION_COPY); + + g_signal_connect_swapped (priv->preview, "drag-data-received", + G_CALLBACK (gimp_pattern_select_drag_data_received), + pattern_button); + + button = gtk_button_new_with_mnemonic (_("_Browse...")); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + + g_signal_connect_swapped (button, "clicked", + G_CALLBACK (gimp_pattern_select_button_clicked), + pattern_button); + + gtk_widget_show_all (hbox); + + gtk_widget_pop_composite_child (); + + return hbox; +} |