[gimp] app: add GimpHighlightableButton
- From: N/A <ell src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gimp] app: add GimpHighlightableButton
- Date: Wed, 7 Mar 2018 11:18:58 +0000 (UTC)
commit a12a2344bcebbcd494e4793855b8df711de4e3bd
Author: Ell <ell_se yahoo com>
Date: Wed Mar 7 05:37:28 2018 -0500
app: add GimpHighlightableButton
GimpHighlightableButton is a subclass of GimpButton, which can be
"highlighted" by changing its color to draw attention to it.
app/widgets/Makefile.am | 2 +
app/widgets/gimphighlightablebutton.c | 365 +++++++++++++++++++++++++++++++++
app/widgets/gimphighlightablebutton.h | 63 ++++++
app/widgets/widgets-types.h | 1 +
4 files changed, 431 insertions(+), 0 deletions(-)
---
diff --git a/app/widgets/Makefile.am b/app/widgets/Makefile.am
index 8c3658e..4118712 100644
--- a/app/widgets/Makefile.am
+++ b/app/widgets/Makefile.am
@@ -216,6 +216,8 @@ libappwidgets_a_sources = \
gimphelp.c \
gimphelp.h \
gimphelp-ids.h \
+ gimphighlightablebutton.c \
+ gimphighlightablebutton.h \
gimphistogrambox.c \
gimphistogrambox.h \
gimphistogrameditor.c \
diff --git a/app/widgets/gimphighlightablebutton.c b/app/widgets/gimphighlightablebutton.c
new file mode 100644
index 0000000..f6b5b00
--- /dev/null
+++ b/app/widgets/gimphighlightablebutton.c
@@ -0,0 +1,365 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimphighlightablebutton.c
+ * Copyright (C) 2018 Ell
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimp-cairo.h"
+
+#include "gimphighlightablebutton.h"
+
+
+#define DEFAULT_HIGHLIGHT_COLOR {0.20, 0.70, 0.20, 0.65}
+
+#define PADDING 1
+#define BORDER_WIDTH 1
+#define CORNER_RADIUS 2
+
+#define REV (2.0 * G_PI)
+
+
+enum
+{
+ PROP_0,
+ PROP_HIGHLIGHT,
+ PROP_HIGHLIGHT_COLOR
+};
+
+
+struct _GimpHighlightableButtonPrivate
+{
+ gboolean highlight;
+ GimpRGB highlight_color;
+};
+
+
+static void gimp_highlightable_button_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_highlightable_button_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static gboolean gimp_highlightable_button_expose_event (GtkWidget *widget,
+ GdkEventExpose *event);
+
+
+G_DEFINE_TYPE (GimpHighlightableButton, gimp_highlightable_button, GIMP_TYPE_BUTTON)
+
+#define parent_class gimp_highlightable_button_parent_class
+
+
+static void
+gimp_highlightable_button_class_init (GimpHighlightableButtonClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ object_class->get_property = gimp_highlightable_button_get_property;
+ object_class->set_property = gimp_highlightable_button_set_property;
+
+ widget_class->expose_event = gimp_highlightable_button_expose_event;
+
+ g_object_class_install_property (object_class, PROP_HIGHLIGHT,
+ g_param_spec_boolean ("highlight",
+ NULL, NULL,
+ FALSE,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (object_class, PROP_HIGHLIGHT_COLOR,
+ gimp_param_spec_rgb ("highlight-color",
+ NULL, NULL,
+ TRUE,
+ &(GimpRGB) DEFAULT_HIGHLIGHT_COLOR,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_type_class_add_private (klass, sizeof (GimpHighlightableButtonPrivate));
+}
+
+static void
+gimp_highlightable_button_init (GimpHighlightableButton *button)
+{
+ button->priv = G_TYPE_INSTANCE_GET_PRIVATE (button,
+ GIMP_TYPE_HIGHLIGHTABLE_BUTTON,
+ GimpHighlightableButtonPrivate);
+}
+
+static void
+gimp_highlightable_button_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (object);
+
+ switch (property_id)
+ {
+ case PROP_HIGHLIGHT:
+ gimp_highlightable_button_set_highlight (button,
+ g_value_get_boolean (value));
+ break;
+
+ case PROP_HIGHLIGHT_COLOR:
+ gimp_highlightable_button_set_highlight_color (button,
+ g_value_get_boxed (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_highlightable_button_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (object);
+
+ switch (property_id)
+ {
+ case PROP_HIGHLIGHT:
+ g_value_set_boolean (value, button->priv->highlight);
+ break;
+
+ case PROP_HIGHLIGHT_COLOR:
+ g_value_set_boxed (value, &button->priv->highlight_color);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static gboolean
+gimp_highlightable_button_expose_event (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (widget);
+
+ if (button->priv->highlight)
+ {
+ if (gtk_widget_is_drawable (widget))
+ {
+ GtkStyle *style = gtk_widget_get_style (widget);
+ GtkStateType state = gtk_widget_get_state (widget);
+ GtkAllocation allocation;
+ gboolean border;
+ gdouble lightness;
+ gdouble x;
+ gdouble y;
+ gdouble width;
+ gdouble height;
+ cairo_t *cr;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ border =
+ (state == GTK_STATE_ACTIVE ||
+ state == GTK_STATE_PRELIGHT ||
+ gtk_button_get_relief (GTK_BUTTON (button)) == GTK_RELIEF_NORMAL);
+
+ if (state == GTK_STATE_ACTIVE)
+ lightness = 0.80;
+ else if (state == GTK_STATE_PRELIGHT)
+ lightness = 1.25;
+ else
+ lightness = 1.00;
+
+ x = allocation.x + PADDING;
+ y = allocation.y + PADDING;
+ width = allocation.width - 2.0 * PADDING;
+ height = allocation.height - 2.0 * PADDING;
+
+ if (border)
+ {
+ x += BORDER_WIDTH / 2.0;
+ y += BORDER_WIDTH / 2.0;
+ width -= BORDER_WIDTH;
+ height -= BORDER_WIDTH;
+ }
+
+ cr = gdk_cairo_create (event->window);
+ gdk_cairo_region (cr, event->region);
+ cairo_clip (cr);
+
+ cairo_set_source_rgba (cr,
+ button->priv->highlight_color.r * lightness,
+ button->priv->highlight_color.g * lightness,
+ button->priv->highlight_color.b * lightness,
+ button->priv->highlight_color.a);
+
+ gimp_cairo_rounded_rectangle (cr,
+ x, y, width, height, CORNER_RADIUS);
+
+ cairo_fill_preserve (cr);
+
+ if (border)
+ {
+ gdk_cairo_set_source_color (cr, &style->fg[state]);
+
+ cairo_set_line_width (cr, BORDER_WIDTH);
+
+ cairo_stroke (cr);
+ }
+
+ cairo_destroy (cr);
+
+ if (gtk_widget_has_focus (widget))
+ {
+ gboolean interior_focus;
+ gint focus_width;
+ gint focus_pad;
+ gint child_displacement_x;
+ gint child_displacement_y;
+ gboolean displace_focus;
+ gint x;
+ gint y;
+ gint width;
+ gint height;
+
+ gtk_widget_style_get (widget,
+ "interior-focus", &interior_focus,
+ "focus-line-width", &focus_width,
+ "focus-padding", &focus_pad,
+ "child-displacement-y", &child_displacement_y,
+ "child-displacement-x", &child_displacement_x,
+ "displace-focus", &displace_focus,
+ NULL);
+
+ x = allocation.x + PADDING;
+ y = allocation.y + PADDING;
+ width = allocation.width - 2 * PADDING;
+ height = allocation.height - 2 * PADDING;
+
+ if (interior_focus)
+ {
+ x += style->xthickness + focus_pad;
+ y += style->ythickness + focus_pad;
+ width -= 2 * (style->xthickness + focus_pad);
+ height -= 2 * (style->ythickness + focus_pad);
+ }
+ else
+ {
+ x -= focus_width + focus_pad;
+ y -= focus_width + focus_pad;
+ width += 2 * (focus_width + focus_pad);
+ height += 2 * (focus_width + focus_pad);
+ }
+
+ if (state == GTK_STATE_ACTIVE && displace_focus)
+ {
+ x += child_displacement_x;
+ y += child_displacement_y;
+ }
+
+ gtk_paint_focus (style, gtk_widget_get_window (widget), state,
+ &event->area, widget, "button",
+ x, y, width, height);
+ }
+
+ gtk_container_propagate_expose (GTK_CONTAINER (button),
+ gtk_bin_get_child (GTK_BIN (button)),
+ event);
+ }
+
+ return FALSE;
+ }
+ else
+ {
+ return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
+ }
+}
+
+
+/* public functions */
+
+
+GtkWidget *
+gimp_highlightable_button_new (void)
+{
+ return g_object_new (GIMP_TYPE_HIGHLIGHTABLE_BUTTON, NULL);
+}
+
+void
+gimp_highlightable_button_set_highlight (GimpHighlightableButton *button,
+ gboolean highlight)
+{
+ g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
+
+ if (button->priv->highlight != highlight)
+ {
+ button->priv->highlight = highlight;
+
+ gtk_widget_queue_draw (GTK_WIDGET (button));
+
+ g_object_notify (G_OBJECT (button), "highlight");
+ }
+}
+
+gboolean
+gimp_highlightable_button_get_highlight (GimpHighlightableButton *button)
+{
+ g_return_val_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button), FALSE);
+
+ return button->priv->highlight;
+}
+
+void
+gimp_highlightable_button_set_highlight_color (GimpHighlightableButton *button,
+ const GimpRGB *color)
+{
+ g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
+ g_return_if_fail (color != NULL);
+
+ if (memcmp (&button->priv->highlight_color, color, sizeof (GimpRGB)))
+ {
+ button->priv->highlight_color = *color;
+
+ if (button->priv->highlight)
+ gtk_widget_queue_draw (GTK_WIDGET (button));
+
+ g_object_notify (G_OBJECT (button), "highlight-color");
+ }
+}
+
+void
+gimp_highlightable_button_get_highlight_color (GimpHighlightableButton *button,
+ GimpRGB *color)
+{
+ g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
+ g_return_if_fail (color != NULL);
+
+ *color = button->priv->highlight_color;
+}
diff --git a/app/widgets/gimphighlightablebutton.h b/app/widgets/gimphighlightablebutton.h
new file mode 100644
index 0000000..d6d1fdf
--- /dev/null
+++ b/app/widgets/gimphighlightablebutton.h
@@ -0,0 +1,63 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimphighlightablebutton.h
+ * Copyright (C) 2018 Ell
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_HIGHLIGHTABLE_BUTTON_H__
+#define __GIMP_HIGHLIGHTABLE_BUTTON_H__
+
+
+#define GIMP_TYPE_HIGHLIGHTABLE_BUTTON (gimp_highlightable_button_get_type ())
+#define GIMP_HIGHLIGHTABLE_BUTTON(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj),
GIMP_TYPE_HIGHLIGHTABLE_BUTTON, GimpHighlightableButton))
+#define GIMP_HIGHLIGHTABLE_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass),
GIMP_TYPE_HIGHLIGHTABLE_BUTTON, GimpHighlightableButtonClass))
+#define GIMP_IS_HIGHLIGHTABLE_BUTTON(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj,
GIMP_TYPE_HIGHLIGHTABLE_BUTTON))
+#define GIMP_IS_HIGHLIGHTABLE_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),
GIMP_TYPE_HIGHLIGHTABLE_BUTTON))
+#define GIMP_HIGHLIGHTABLE_BUTTON_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),
GIMP_TYPE_HIGHLIGHTABLE_BUTTON, GimpHighlightableButtonClass))
+
+
+typedef struct _GimpHighlightableButtonPrivate GimpHighlightableButtonPrivate;
+typedef struct _GimpHighlightableButtonClass GimpHighlightableButtonClass;
+
+struct _GimpHighlightableButton
+{
+ GimpButton parent_instance;
+
+ GimpHighlightableButtonPrivate *priv;
+};
+
+struct _GimpHighlightableButtonClass
+{
+ GimpButtonClass parent_class;
+};
+
+
+GType gimp_highlightable_button_get_type (void) G_GNUC_CONST;
+
+GtkWidget * gimp_highlightable_button_new (void);
+
+void gimp_highlightable_button_set_highlight (GimpHighlightableButton *button,
+ gboolean highlight);
+gboolean gimp_highlightable_button_get_highlight (GimpHighlightableButton *button);
+
+void gimp_highlightable_button_set_highlight_color (GimpHighlightableButton *button,
+ const GimpRGB *color);
+void gimp_highlightable_button_get_highlight_color (GimpHighlightableButton *button,
+ GimpRGB *color);
+
+
+#endif /* __GIMP_HIGHLIGHTABLE_BUTTON_H__ */
diff --git a/app/widgets/widgets-types.h b/app/widgets/widgets-types.h
index b82adb0..09a0e51 100644
--- a/app/widgets/widgets-types.h
+++ b/app/widgets/widgets-types.h
@@ -190,6 +190,7 @@ typedef struct _GimpFileProcView GimpFileProcView;
typedef struct _GimpFillEditor GimpFillEditor;
typedef struct _GimpGridEditor GimpGridEditor;
typedef struct _GimpHandleBar GimpHandleBar;
+typedef struct _GimpHighlightableButton GimpHighlightableButton;
typedef struct _GimpHistogramBox GimpHistogramBox;
typedef struct _GimpHistogramView GimpHistogramView;
typedef struct _GimpIconPicker GimpIconPicker;
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