forked from AuroraMiddleware/gtk
5f0c4fc20f
We don't want e.g. the swatch in GtkColorEditor to get the select badge when it's clicked, so make this a property (on by default).
732 lines
21 KiB
C
732 lines
21 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2012 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "gtkcolorswatchprivate.h"
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#include "gtkcolorchooserprivate.h"
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#include "gtkroundedboxprivate.h"
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#include "gtkthemingbackgroundprivate.h"
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#include "gtkdnd.h"
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#include "gtkicontheme.h"
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#include "gtkmain.h"
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#include "gtkmenu.h"
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#include "gtkmenuitem.h"
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#include "gtkmenushell.h"
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#include "gtkprivate.h"
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#include "gtkintl.h"
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#include "a11y/gtkcolorswatchaccessible.h"
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struct _GtkColorSwatchPrivate
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{
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GdkRGBA color;
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gdouble radius[4];
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gchar *icon;
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guint has_color : 1;
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guint contains_pointer : 1;
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guint use_alpha : 1;
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guint selectable : 1;
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};
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enum
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{
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PROP_ZERO,
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PROP_RGBA,
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PROP_SELECTABLE
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};
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enum
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{
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ACTIVATE,
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CUSTOMIZE,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL];
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G_DEFINE_TYPE (GtkColorSwatch, gtk_color_swatch, GTK_TYPE_DRAWING_AREA)
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static void
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gtk_color_swatch_init (GtkColorSwatch *swatch)
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{
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swatch->priv = G_TYPE_INSTANCE_GET_PRIVATE (swatch,
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GTK_TYPE_COLOR_SWATCH,
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GtkColorSwatchPrivate);
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gtk_widget_set_can_focus (GTK_WIDGET (swatch), TRUE);
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gtk_widget_set_events (GTK_WIDGET (swatch), GDK_BUTTON_PRESS_MASK
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| GDK_BUTTON_RELEASE_MASK
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| GDK_EXPOSURE_MASK
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| GDK_ENTER_NOTIFY_MASK
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| GDK_LEAVE_NOTIFY_MASK);
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swatch->priv->use_alpha = TRUE;
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swatch->priv->selectable = TRUE;
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}
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#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
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static gboolean
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swatch_draw (GtkWidget *widget,
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cairo_t *cr)
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{
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GtkColorSwatch *swatch = (GtkColorSwatch*)widget;
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GtkThemingBackground background;
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gdouble width, height;
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GtkStyleContext *context;
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GtkStateFlags state;
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GtkIconTheme *theme;
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GtkIconInfo *icon_info = NULL;
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theme = gtk_icon_theme_get_default ();
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context = gtk_widget_get_style_context (widget);
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state = gtk_widget_get_state_flags (widget);
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width = gtk_widget_get_allocated_width (widget);
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height = gtk_widget_get_allocated_height (widget);
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cairo_save (cr);
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gtk_style_context_save (context);
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gtk_style_context_set_state (context, state);
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_gtk_theming_background_init_from_context (&background, context,
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0, 0, width, height,
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GTK_JUNCTION_NONE);
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if (swatch->priv->has_color)
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{
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cairo_pattern_t *pattern;
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cairo_matrix_t matrix;
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if (swatch->priv->use_alpha)
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{
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cairo_save (cr);
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_gtk_rounded_box_path (&background.clip_box, cr);
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cairo_clip_preserve (cr);
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cairo_set_source_rgb (cr, 0.33, 0.33, 0.33);
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cairo_fill_preserve (cr);
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pattern = _gtk_color_chooser_get_checkered_pattern ();
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cairo_matrix_init_scale (&matrix, 0.125, 0.125);
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cairo_pattern_set_matrix (pattern, &matrix);
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cairo_set_source_rgb (cr, 0.66, 0.66, 0.66);
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cairo_mask (cr, pattern);
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cairo_pattern_destroy (pattern);
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cairo_restore (cr);
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background.bg_color = swatch->priv->color;
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}
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else
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{
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background.bg_color = swatch->priv->color;
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background.bg_color.alpha = 1.0;
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}
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_gtk_theming_background_render (&background, cr);
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}
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gtk_render_frame (context, cr,
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0, 0, width, height);
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if (gtk_widget_has_visible_focus (widget))
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{
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cairo_set_line_width (cr, 2);
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if (swatch->priv->has_color && INTENSITY (swatch->priv->color.red, swatch->priv->color.green, swatch->priv->color.blue) < 0.5)
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cairo_set_source_rgba (cr, 1., 1., 1., 0.4);
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else
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cairo_set_source_rgba (cr, 0., 0., 0., 0.4);
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_gtk_rounded_box_shrink (&background.clip_box, 3, 3, 3, 3);
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_gtk_rounded_box_path (&background.clip_box, cr);
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cairo_stroke (cr);
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}
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if (swatch->priv->icon)
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{
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icon_info = gtk_icon_theme_lookup_icon (theme, swatch->priv->icon, 16,
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GTK_ICON_LOOKUP_GENERIC_FALLBACK
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| GTK_ICON_LOOKUP_USE_BUILTIN);
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}
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else if ((state & GTK_STATE_FLAG_SELECTED) != 0)
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{
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GdkRGBA bg, border;
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GtkBorder border_width;
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GIcon *gicon;
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gtk_style_context_add_class (context, "color-active-badge");
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gtk_style_context_get_background_color (context, state, &bg);
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gtk_style_context_get_border_color (context, state, &border);
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gtk_style_context_get_border (context, state, &border_width);
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cairo_new_sub_path (cr);
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cairo_arc (cr, width / 2, height / 2, 10, 0, 2 * G_PI);
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cairo_close_path (cr);
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gdk_cairo_set_source_rgba (cr, &bg);
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cairo_fill_preserve (cr);
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gdk_cairo_set_source_rgba (cr, &border);
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cairo_set_line_width (cr, border_width.left);
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cairo_stroke (cr);
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gicon = g_themed_icon_new ("object-select-symbolic");
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/* fallback for themes that don't have object-select-symbolic */
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g_themed_icon_append_name (G_THEMED_ICON (gicon), "gtk-apply");
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icon_info = gtk_icon_theme_lookup_by_gicon (theme, gicon, 16,
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GTK_ICON_LOOKUP_GENERIC_FALLBACK
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| GTK_ICON_LOOKUP_USE_BUILTIN);
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g_object_unref (gicon);
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}
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if (icon_info != NULL)
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{
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GdkPixbuf *pixbuf;
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pixbuf = gtk_icon_info_load_symbolic_for_context (icon_info, context,
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NULL, NULL);
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if (pixbuf != NULL)
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{
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gtk_render_icon (context, cr, pixbuf,
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(width - gdk_pixbuf_get_width (pixbuf)) / 2,
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(height - gdk_pixbuf_get_height (pixbuf)) / 2);
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g_object_unref (pixbuf);
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}
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gtk_icon_info_free (icon_info);
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}
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cairo_restore (cr);
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gtk_style_context_restore (context);
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return FALSE;
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}
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static void
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drag_set_color_icon (GdkDragContext *context,
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const GdkRGBA *color)
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{
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cairo_surface_t *surface;
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cairo_t *cr;
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surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 48, 32);
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cr = cairo_create (surface);
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gdk_cairo_set_source_rgba (cr, color);
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cairo_paint (cr);
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cairo_surface_set_device_offset (surface, -4, -4);
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gtk_drag_set_icon_surface (context, surface);
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cairo_destroy (cr);
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cairo_surface_destroy (surface);
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}
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static void
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swatch_drag_begin (GtkWidget *widget,
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GdkDragContext *context)
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{
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GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
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GdkRGBA color;
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gtk_color_swatch_get_rgba (swatch, &color);
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drag_set_color_icon (context, &color);
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}
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static void
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swatch_drag_data_get (GtkWidget *widget,
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GdkDragContext *context,
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GtkSelectionData *selection_data,
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guint info,
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guint time)
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{
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GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
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guint16 vals[4];
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GdkRGBA color;
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gtk_color_swatch_get_rgba (swatch, &color);
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vals[0] = color.red * 0xffff;
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vals[1] = color.green * 0xffff;
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vals[2] = color.blue * 0xffff;
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vals[3] = color.alpha * 0xffff;
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gtk_selection_data_set (selection_data,
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gdk_atom_intern_static_string ("application/x-color"),
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16, (guchar *)vals, 8);
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}
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static void
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swatch_drag_data_received (GtkWidget *widget,
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GdkDragContext *context,
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gint x,
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gint y,
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GtkSelectionData *selection_data,
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guint info,
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guint time)
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{
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gint length;
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guint16 *vals;
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GdkRGBA color;
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length = gtk_selection_data_get_length (selection_data);
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if (length < 0)
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return;
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/* We accept drops with the wrong format, since the KDE color
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* chooser incorrectly drops application/x-color with format 8.
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*/
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if (length != 8)
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{
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g_warning ("Received invalid color data\n");
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return;
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}
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vals = (guint16 *) gtk_selection_data_get_data (selection_data);
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color.red = (gdouble)vals[0] / 0xffff;
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color.green = (gdouble)vals[1] / 0xffff;
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color.blue = (gdouble)vals[2] / 0xffff;
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color.alpha = (gdouble)vals[3] / 0xffff;
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gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (widget), &color);
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}
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static void
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swatch_get_preferred_width (GtkWidget *widget,
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gint *min,
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gint *nat)
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{
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*min = *nat = 48;
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}
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static void
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swatch_get_preferred_height (GtkWidget *widget,
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gint *min,
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gint *nat)
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{
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*min = *nat = 32;
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}
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static gboolean
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swatch_key_press (GtkWidget *widget,
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GdkEventKey *event)
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{
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GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
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if (event->keyval == GDK_KEY_space ||
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event->keyval == GDK_KEY_Return ||
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event->keyval == GDK_KEY_ISO_Enter||
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event->keyval == GDK_KEY_KP_Enter ||
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event->keyval == GDK_KEY_KP_Space)
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{
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if (swatch->priv->has_color &&
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swatch->priv->selectable &&
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(gtk_widget_get_state_flags (widget) & GTK_STATE_FLAG_SELECTED) == 0)
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gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_SELECTED, FALSE);
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else
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g_signal_emit (swatch, signals[ACTIVATE], 0);
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return TRUE;
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}
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if (GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->key_press_event (widget, event))
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return TRUE;
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return FALSE;
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}
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static gboolean
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swatch_enter_notify (GtkWidget *widget,
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GdkEventCrossing *event)
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{
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GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
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swatch->priv->contains_pointer = TRUE;
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return FALSE;
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}
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static gboolean
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swatch_leave_notify (GtkWidget *widget,
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GdkEventCrossing *event)
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{
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GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
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swatch->priv->contains_pointer = FALSE;
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return FALSE;
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}
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static void
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emit_customize (GtkColorSwatch *swatch)
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{
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g_signal_emit (swatch, signals[CUSTOMIZE], 0);
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}
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static void
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popup_position_func (GtkMenu *menu,
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gint *x,
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gint *y,
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gboolean *push_in,
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gpointer user_data)
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{
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GtkWidget *widget;
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GtkRequisition req;
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gint root_x, root_y;
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GdkScreen *screen;
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GdkWindow *window;
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GdkRectangle monitor;
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gint monitor_num;
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widget = GTK_WIDGET (user_data);
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g_return_if_fail (gtk_widget_get_realized (widget));
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window = gtk_widget_get_window (widget);
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screen = gtk_widget_get_screen (widget);
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monitor_num = gdk_screen_get_monitor_at_window (screen, window);
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if (monitor_num < 0)
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monitor_num = 0;
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gtk_menu_set_monitor (menu, monitor_num);
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gdk_window_get_origin (window, &root_x, &root_y);
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gtk_widget_get_preferred_size (GTK_WIDGET (menu), &req, NULL);
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/* Put corner of menu centered on swatch */
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*x = root_x + gtk_widget_get_allocated_width (widget) / 2;
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*y = root_y + gtk_widget_get_allocated_height (widget) / 2;
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/* Ensure sanity */
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gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
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*x = CLAMP (*x, monitor.x, MAX (monitor.x, monitor.width - req.width));
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*y = CLAMP (*y, monitor.y, MAX (monitor.y, monitor.height - req.height));
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}
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static void
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do_popup (GtkWidget *swatch,
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GdkEventButton *event)
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{
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GtkWidget *menu;
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GtkWidget *item;
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menu = gtk_menu_new ();
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item = gtk_menu_item_new_with_mnemonic (_("_Customize"));
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gtk_menu_attach_to_widget (GTK_MENU (menu), swatch, NULL);
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g_signal_connect_swapped (item, "activate",
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G_CALLBACK (emit_customize), swatch);
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gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
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gtk_widget_show_all (item);
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if (event)
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gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
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NULL, NULL, event->button, event->time);
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else
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gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
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popup_position_func, swatch,
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0, gtk_get_current_event_time ());
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}
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static gboolean
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swatch_button_press (GtkWidget *widget,
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GdkEventButton *event)
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{
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GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
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gtk_widget_grab_focus (widget);
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if (gdk_event_triggers_context_menu ((GdkEvent *) event) &&
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swatch->priv->has_color)
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{
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do_popup (widget, event);
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return TRUE;
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}
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else if (event->type == GDK_2BUTTON_PRESS &&
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event->button == GDK_BUTTON_PRIMARY)
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{
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g_signal_emit (swatch, signals[ACTIVATE], 0);
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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swatch_button_release (GtkWidget *widget,
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GdkEventButton *event)
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{
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GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
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GtkStateFlags flags;
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if (event->button == GDK_BUTTON_PRIMARY &&
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swatch->priv->contains_pointer)
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{
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flags = gtk_widget_get_state_flags (widget);
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if (!swatch->priv->has_color)
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{
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g_signal_emit (swatch, signals[ACTIVATE], 0);
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return TRUE;
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}
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else if (swatch->priv->selectable &&
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(flags & GTK_STATE_FLAG_SELECTED) == 0)
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{
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gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_SELECTED, FALSE);
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return TRUE;
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}
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}
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return FALSE;
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}
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static gboolean
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swatch_popup_menu (GtkWidget *swatch)
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{
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do_popup (swatch, NULL);
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return TRUE;
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}
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/* GObject implementation {{{1 */
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static void
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swatch_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
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GdkRGBA color;
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switch (prop_id)
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{
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case PROP_RGBA:
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gtk_color_swatch_get_rgba (swatch, &color);
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g_value_set_boxed (value, &color);
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break;
|
|
case PROP_SELECTABLE:
|
|
g_value_set_boolean (value, gtk_color_swatch_get_selectable (swatch));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
swatch_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_RGBA:
|
|
gtk_color_swatch_set_rgba (swatch, g_value_get_boxed (value));
|
|
break;
|
|
case PROP_SELECTABLE:
|
|
gtk_color_swatch_set_selectable (swatch, g_value_get_boolean (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
swatch_finalize (GObject *object)
|
|
{
|
|
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
|
|
|
|
g_free (swatch->priv->icon);
|
|
|
|
G_OBJECT_CLASS (gtk_color_swatch_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gtk_color_swatch_class_init (GtkColorSwatchClass *class)
|
|
{
|
|
GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
|
|
GObjectClass *object_class = (GObjectClass *)class;
|
|
|
|
object_class->get_property = swatch_get_property;
|
|
object_class->set_property = swatch_set_property;
|
|
object_class->finalize = swatch_finalize;
|
|
|
|
widget_class->get_preferred_width = swatch_get_preferred_width;
|
|
widget_class->get_preferred_height = swatch_get_preferred_height;
|
|
widget_class->draw = swatch_draw;
|
|
widget_class->drag_begin = swatch_drag_begin;
|
|
widget_class->drag_data_get = swatch_drag_data_get;
|
|
widget_class->drag_data_received = swatch_drag_data_received;
|
|
widget_class->key_press_event = swatch_key_press;
|
|
widget_class->popup_menu = swatch_popup_menu;
|
|
widget_class->button_press_event = swatch_button_press;
|
|
widget_class->button_release_event = swatch_button_release;
|
|
widget_class->enter_notify_event = swatch_enter_notify;
|
|
widget_class->leave_notify_event = swatch_leave_notify;
|
|
|
|
signals[ACTIVATE] =
|
|
g_signal_new ("activate",
|
|
GTK_TYPE_COLOR_SWATCH,
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET (GtkColorSwatchClass, activate),
|
|
NULL, NULL, NULL, G_TYPE_NONE, 0);
|
|
|
|
signals[CUSTOMIZE] =
|
|
g_signal_new ("customize",
|
|
GTK_TYPE_COLOR_SWATCH,
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET (GtkColorSwatchClass, customize),
|
|
NULL, NULL, NULL, G_TYPE_NONE, 0);
|
|
|
|
g_object_class_install_property (object_class, PROP_RGBA,
|
|
g_param_spec_boxed ("rgba", P_("RGBA Color"), P_("Color as RGBA"),
|
|
GDK_TYPE_RGBA, GTK_PARAM_READWRITE));
|
|
g_object_class_install_property (object_class, PROP_SELECTABLE,
|
|
g_param_spec_boolean ("selectable", P_("Selectable"), P_("Whether the swatch is selectable"),
|
|
TRUE, GTK_PARAM_READWRITE));
|
|
|
|
g_type_class_add_private (object_class, sizeof (GtkColorSwatchPrivate));
|
|
|
|
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_COLOR_SWATCH_ACCESSIBLE);
|
|
}
|
|
|
|
/* Public API {{{1 */
|
|
|
|
GtkWidget *
|
|
gtk_color_swatch_new (void)
|
|
{
|
|
return (GtkWidget *) g_object_new (GTK_TYPE_COLOR_SWATCH, NULL);
|
|
}
|
|
|
|
static const GtkTargetEntry dnd_targets[] = {
|
|
{ "application/x-color", 0 }
|
|
};
|
|
|
|
void
|
|
gtk_color_swatch_set_rgba (GtkColorSwatch *swatch,
|
|
const GdkRGBA *color)
|
|
{
|
|
GtkStyleContext *context;
|
|
|
|
context = gtk_widget_get_style_context (GTK_WIDGET (swatch));
|
|
|
|
if (!swatch->priv->has_color)
|
|
{
|
|
gtk_drag_source_set (GTK_WIDGET (swatch),
|
|
GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
|
|
dnd_targets, G_N_ELEMENTS (dnd_targets),
|
|
GDK_ACTION_COPY | GDK_ACTION_MOVE);
|
|
}
|
|
else
|
|
{
|
|
gtk_style_context_remove_class (context, "color-light");
|
|
gtk_style_context_remove_class (context, "color-dark");
|
|
}
|
|
|
|
swatch->priv->has_color = TRUE;
|
|
swatch->priv->color = *color;
|
|
|
|
if (INTENSITY (swatch->priv->color.red, swatch->priv->color.green, swatch->priv->color.blue) > 0.5)
|
|
gtk_style_context_add_class (context, "color-light");
|
|
else
|
|
gtk_style_context_add_class (context, "color-dark");
|
|
|
|
gtk_widget_queue_draw (GTK_WIDGET (swatch));
|
|
g_object_notify (G_OBJECT (swatch), "rgba");
|
|
}
|
|
|
|
gboolean
|
|
gtk_color_swatch_get_rgba (GtkColorSwatch *swatch,
|
|
GdkRGBA *color)
|
|
{
|
|
if (swatch->priv->has_color)
|
|
{
|
|
color->red = swatch->priv->color.red;
|
|
color->green = swatch->priv->color.green;
|
|
color->blue = swatch->priv->color.blue;
|
|
color->alpha = swatch->priv->color.alpha;
|
|
return TRUE;
|
|
}
|
|
else
|
|
{
|
|
color->red = 1.0;
|
|
color->green = 1.0;
|
|
color->blue = 1.0;
|
|
color->alpha = 1.0;
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_color_swatch_set_icon (GtkColorSwatch *swatch,
|
|
const gchar *icon)
|
|
{
|
|
swatch->priv->icon = g_strdup (icon);
|
|
gtk_widget_queue_draw (GTK_WIDGET (swatch));
|
|
}
|
|
|
|
void
|
|
gtk_color_swatch_set_can_drop (GtkColorSwatch *swatch,
|
|
gboolean can_drop)
|
|
{
|
|
if (can_drop)
|
|
{
|
|
gtk_drag_dest_set (GTK_WIDGET (swatch),
|
|
GTK_DEST_DEFAULT_HIGHLIGHT |
|
|
GTK_DEST_DEFAULT_MOTION |
|
|
GTK_DEST_DEFAULT_DROP,
|
|
dnd_targets, G_N_ELEMENTS (dnd_targets),
|
|
GDK_ACTION_COPY);
|
|
}
|
|
else
|
|
{
|
|
gtk_drag_dest_unset (GTK_WIDGET (swatch));
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_color_swatch_set_use_alpha (GtkColorSwatch *swatch,
|
|
gboolean use_alpha)
|
|
{
|
|
swatch->priv->use_alpha = use_alpha;
|
|
gtk_widget_queue_draw (GTK_WIDGET (swatch));
|
|
}
|
|
|
|
void
|
|
gtk_color_swatch_set_selectable (GtkColorSwatch *swatch,
|
|
gboolean selectable)
|
|
{
|
|
if (selectable == swatch->priv->selectable)
|
|
return;
|
|
|
|
swatch->priv->selectable = selectable;
|
|
g_object_notify (G_OBJECT (swatch), "selectable");
|
|
}
|
|
|
|
gboolean
|
|
gtk_color_swatch_get_selectable (GtkColorSwatch *swatch)
|
|
{
|
|
return swatch->priv->selectable;
|
|
}
|
|
|
|
/* vim:set foldmethod=marker: */
|