mirror of https://github.com/GNOME/gimp.git
app: add GimpHighlightableButton
GimpHighlightableButton is a subclass of GimpButton, which can be "highlighted" by changing its color to draw attention to it.
This commit is contained in:
Ell
parent
a6001f1941
commit
a12a2344bc
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@ -216,6 +216,8 @@ libappwidgets_a_sources = \
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gimphelp.c \
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gimphelp.h \
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gimphelp-ids.h \
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gimphighlightablebutton.c \
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gimphighlightablebutton.h \
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gimphistogrambox.c \
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gimphistogrambox.h \
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gimphistogrameditor.c \
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@ -0,0 +1,365 @@
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/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimphighlightablebutton.c
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* Copyright (C) 2018 Ell
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "widgets-types.h"
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#include "core/gimp-cairo.h"
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#include "gimphighlightablebutton.h"
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#define DEFAULT_HIGHLIGHT_COLOR {0.20, 0.70, 0.20, 0.65}
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#define PADDING 1
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#define BORDER_WIDTH 1
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#define CORNER_RADIUS 2
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#define REV (2.0 * G_PI)
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enum
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{
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PROP_0,
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PROP_HIGHLIGHT,
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PROP_HIGHLIGHT_COLOR
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};
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struct _GimpHighlightableButtonPrivate
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{
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gboolean highlight;
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GimpRGB highlight_color;
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};
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static void gimp_highlightable_button_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gimp_highlightable_button_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static gboolean gimp_highlightable_button_expose_event (GtkWidget *widget,
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GdkEventExpose *event);
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G_DEFINE_TYPE (GimpHighlightableButton, gimp_highlightable_button, GIMP_TYPE_BUTTON)
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#define parent_class gimp_highlightable_button_parent_class
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static void
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gimp_highlightable_button_class_init (GimpHighlightableButtonClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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object_class->get_property = gimp_highlightable_button_get_property;
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object_class->set_property = gimp_highlightable_button_set_property;
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widget_class->expose_event = gimp_highlightable_button_expose_event;
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g_object_class_install_property (object_class, PROP_HIGHLIGHT,
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g_param_spec_boolean ("highlight",
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NULL, NULL,
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FALSE,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_HIGHLIGHT_COLOR,
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gimp_param_spec_rgb ("highlight-color",
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NULL, NULL,
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TRUE,
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&(GimpRGB) DEFAULT_HIGHLIGHT_COLOR,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_type_class_add_private (klass, sizeof (GimpHighlightableButtonPrivate));
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}
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static void
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gimp_highlightable_button_init (GimpHighlightableButton *button)
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{
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button->priv = G_TYPE_INSTANCE_GET_PRIVATE (button,
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GIMP_TYPE_HIGHLIGHTABLE_BUTTON,
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GimpHighlightableButtonPrivate);
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}
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static void
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gimp_highlightable_button_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (object);
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switch (property_id)
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{
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case PROP_HIGHLIGHT:
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gimp_highlightable_button_set_highlight (button,
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g_value_get_boolean (value));
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break;
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case PROP_HIGHLIGHT_COLOR:
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gimp_highlightable_button_set_highlight_color (button,
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g_value_get_boxed (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gimp_highlightable_button_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (object);
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switch (property_id)
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{
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case PROP_HIGHLIGHT:
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g_value_set_boolean (value, button->priv->highlight);
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break;
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case PROP_HIGHLIGHT_COLOR:
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g_value_set_boxed (value, &button->priv->highlight_color);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static gboolean
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gimp_highlightable_button_expose_event (GtkWidget *widget,
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GdkEventExpose *event)
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{
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GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (widget);
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if (button->priv->highlight)
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{
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if (gtk_widget_is_drawable (widget))
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{
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GtkStyle *style = gtk_widget_get_style (widget);
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GtkStateType state = gtk_widget_get_state (widget);
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GtkAllocation allocation;
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gboolean border;
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gdouble lightness;
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gdouble x;
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gdouble y;
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gdouble width;
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gdouble height;
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cairo_t *cr;
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gtk_widget_get_allocation (widget, &allocation);
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border =
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(state == GTK_STATE_ACTIVE ||
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state == GTK_STATE_PRELIGHT ||
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gtk_button_get_relief (GTK_BUTTON (button)) == GTK_RELIEF_NORMAL);
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if (state == GTK_STATE_ACTIVE)
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lightness = 0.80;
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else if (state == GTK_STATE_PRELIGHT)
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lightness = 1.25;
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else
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lightness = 1.00;
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x = allocation.x + PADDING;
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y = allocation.y + PADDING;
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width = allocation.width - 2.0 * PADDING;
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height = allocation.height - 2.0 * PADDING;
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if (border)
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{
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x += BORDER_WIDTH / 2.0;
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y += BORDER_WIDTH / 2.0;
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width -= BORDER_WIDTH;
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height -= BORDER_WIDTH;
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}
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cr = gdk_cairo_create (event->window);
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gdk_cairo_region (cr, event->region);
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cairo_clip (cr);
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cairo_set_source_rgba (cr,
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button->priv->highlight_color.r * lightness,
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button->priv->highlight_color.g * lightness,
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button->priv->highlight_color.b * lightness,
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button->priv->highlight_color.a);
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gimp_cairo_rounded_rectangle (cr,
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x, y, width, height, CORNER_RADIUS);
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cairo_fill_preserve (cr);
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if (border)
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{
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gdk_cairo_set_source_color (cr, &style->fg[state]);
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cairo_set_line_width (cr, BORDER_WIDTH);
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cairo_stroke (cr);
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}
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cairo_destroy (cr);
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if (gtk_widget_has_focus (widget))
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{
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gboolean interior_focus;
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gint focus_width;
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gint focus_pad;
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gint child_displacement_x;
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gint child_displacement_y;
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gboolean displace_focus;
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gint x;
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gint y;
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gint width;
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gint height;
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gtk_widget_style_get (widget,
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"interior-focus", &interior_focus,
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"focus-line-width", &focus_width,
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"focus-padding", &focus_pad,
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"child-displacement-y", &child_displacement_y,
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"child-displacement-x", &child_displacement_x,
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"displace-focus", &displace_focus,
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NULL);
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x = allocation.x + PADDING;
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y = allocation.y + PADDING;
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width = allocation.width - 2 * PADDING;
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height = allocation.height - 2 * PADDING;
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if (interior_focus)
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{
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x += style->xthickness + focus_pad;
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y += style->ythickness + focus_pad;
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width -= 2 * (style->xthickness + focus_pad);
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height -= 2 * (style->ythickness + focus_pad);
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}
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else
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{
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x -= focus_width + focus_pad;
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y -= focus_width + focus_pad;
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width += 2 * (focus_width + focus_pad);
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height += 2 * (focus_width + focus_pad);
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}
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if (state == GTK_STATE_ACTIVE && displace_focus)
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{
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x += child_displacement_x;
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y += child_displacement_y;
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}
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gtk_paint_focus (style, gtk_widget_get_window (widget), state,
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&event->area, widget, "button",
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x, y, width, height);
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}
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gtk_container_propagate_expose (GTK_CONTAINER (button),
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gtk_bin_get_child (GTK_BIN (button)),
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event);
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}
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return FALSE;
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}
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else
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{
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return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
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}
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}
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/* public functions */
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GtkWidget *
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gimp_highlightable_button_new (void)
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{
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return g_object_new (GIMP_TYPE_HIGHLIGHTABLE_BUTTON, NULL);
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}
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void
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gimp_highlightable_button_set_highlight (GimpHighlightableButton *button,
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gboolean highlight)
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{
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g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
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if (button->priv->highlight != highlight)
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{
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button->priv->highlight = highlight;
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gtk_widget_queue_draw (GTK_WIDGET (button));
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g_object_notify (G_OBJECT (button), "highlight");
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}
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}
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gboolean
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gimp_highlightable_button_get_highlight (GimpHighlightableButton *button)
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{
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g_return_val_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button), FALSE);
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return button->priv->highlight;
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}
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void
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gimp_highlightable_button_set_highlight_color (GimpHighlightableButton *button,
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const GimpRGB *color)
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{
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g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
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g_return_if_fail (color != NULL);
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if (memcmp (&button->priv->highlight_color, color, sizeof (GimpRGB)))
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{
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button->priv->highlight_color = *color;
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if (button->priv->highlight)
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gtk_widget_queue_draw (GTK_WIDGET (button));
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g_object_notify (G_OBJECT (button), "highlight-color");
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}
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}
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void
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gimp_highlightable_button_get_highlight_color (GimpHighlightableButton *button,
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GimpRGB *color)
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{
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g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
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g_return_if_fail (color != NULL);
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*color = button->priv->highlight_color;
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}
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@ -0,0 +1,63 @@
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/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimphighlightablebutton.h
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* Copyright (C) 2018 Ell
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GIMP_HIGHLIGHTABLE_BUTTON_H__
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#define __GIMP_HIGHLIGHTABLE_BUTTON_H__
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#define GIMP_TYPE_HIGHLIGHTABLE_BUTTON (gimp_highlightable_button_get_type ())
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#define GIMP_HIGHLIGHTABLE_BUTTON(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_HIGHLIGHTABLE_BUTTON, GimpHighlightableButton))
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#define GIMP_HIGHLIGHTABLE_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_HIGHLIGHTABLE_BUTTON, GimpHighlightableButtonClass))
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#define GIMP_IS_HIGHLIGHTABLE_BUTTON(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GIMP_TYPE_HIGHLIGHTABLE_BUTTON))
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#define GIMP_IS_HIGHLIGHTABLE_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_HIGHLIGHTABLE_BUTTON))
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#define GIMP_HIGHLIGHTABLE_BUTTON_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_HIGHLIGHTABLE_BUTTON, GimpHighlightableButtonClass))
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typedef struct _GimpHighlightableButtonPrivate GimpHighlightableButtonPrivate;
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typedef struct _GimpHighlightableButtonClass GimpHighlightableButtonClass;
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struct _GimpHighlightableButton
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{
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GimpButton parent_instance;
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GimpHighlightableButtonPrivate *priv;
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};
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struct _GimpHighlightableButtonClass
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{
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GimpButtonClass parent_class;
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};
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GType gimp_highlightable_button_get_type (void) G_GNUC_CONST;
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GtkWidget * gimp_highlightable_button_new (void);
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void gimp_highlightable_button_set_highlight (GimpHighlightableButton *button,
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gboolean highlight);
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gboolean gimp_highlightable_button_get_highlight (GimpHighlightableButton *button);
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void gimp_highlightable_button_set_highlight_color (GimpHighlightableButton *button,
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const GimpRGB *color);
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void gimp_highlightable_button_get_highlight_color (GimpHighlightableButton *button,
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GimpRGB *color);
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#endif /* __GIMP_HIGHLIGHTABLE_BUTTON_H__ */
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@ -190,6 +190,7 @@ typedef struct _GimpFileProcView GimpFileProcView;
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typedef struct _GimpFillEditor GimpFillEditor;
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typedef struct _GimpGridEditor GimpGridEditor;
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typedef struct _GimpHandleBar GimpHandleBar;
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typedef struct _GimpHighlightableButton GimpHighlightableButton;
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typedef struct _GimpHistogramBox GimpHistogramBox;
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typedef struct _GimpHistogramView GimpHistogramView;
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typedef struct _GimpIconPicker GimpIconPicker;
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