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/*
* A simple color preview widget
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* Copyright (C) 2001-2002 Lauris Kaplinski
* Copyright (C) 2001 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "../display/nr-plain-stuff-gdk.h"
#include "sp-color-preview.h"
#define SPCP_DEFAULT_WIDTH 32
#define SPCP_DEFAULT_HEIGHT 11
static void sp_color_preview_class_init (SPColorPreviewClass *klass);
static void sp_color_preview_init (SPColorPreview *image);
static void sp_color_preview_destroy (GtkObject *object);
static void sp_color_preview_size_request (GtkWidget *widget, GtkRequisition *requisition);
static void sp_color_preview_size_allocate (GtkWidget *widget, GtkAllocation *allocation);
static gint sp_color_preview_expose (GtkWidget *widget, GdkEventExpose *event);
static void sp_color_preview_paint (SPColorPreview *cp, GdkRectangle *area);
static GtkWidgetClass *parent_class;
GType sp_color_preview_get_type(void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo info = {
sizeof(SPColorPreviewClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) sp_color_preview_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(SPColorPreview),
0, /* n_preallocs */
(GInstanceInitFunc) sp_color_preview_init,
0, /* value_table */
};
type = g_type_register_static( GTK_TYPE_WIDGET,
"SPColorPreview",
&info,
static_cast< GTypeFlags > (0) );
}
return type;
}
static void
sp_color_preview_class_init (SPColorPreviewClass *klass)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass *) klass;
widget_class = (GtkWidgetClass *) klass;
parent_class = (GtkWidgetClass*)gtk_type_class (GTK_TYPE_WIDGET);
object_class->destroy = sp_color_preview_destroy;
widget_class->size_request = sp_color_preview_size_request;
widget_class->size_allocate = sp_color_preview_size_allocate;
widget_class->expose_event = sp_color_preview_expose;
}
static void
sp_color_preview_init (SPColorPreview *image)
{
GTK_WIDGET_SET_FLAGS (image, GTK_NO_WINDOW);
image->rgba = 0xffffffff;
}
static void
sp_color_preview_destroy (GtkObject *object)
{
SPColorPreview *image;
image = SP_COLOR_PREVIEW (object);
if (((GtkObjectClass *) (parent_class))->destroy)
(* ((GtkObjectClass *) (parent_class))->destroy) (object);
}
static void
sp_color_preview_size_request (GtkWidget *widget, GtkRequisition *requisition)
{
SPColorPreview *slider;
slider = SP_COLOR_PREVIEW (widget);
requisition->width = SPCP_DEFAULT_WIDTH;
requisition->height = SPCP_DEFAULT_HEIGHT;
}
static void
sp_color_preview_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
{
SPColorPreview *image;
image = SP_COLOR_PREVIEW (widget);
widget->allocation = *allocation;
if (GTK_WIDGET_DRAWABLE (image)) {
gtk_widget_queue_draw (GTK_WIDGET (image));
}
}
static gint
sp_color_preview_expose (GtkWidget *widget, GdkEventExpose *event)
{
SPColorPreview *cp;
cp = SP_COLOR_PREVIEW (widget);
if (GTK_WIDGET_DRAWABLE (widget)) {
sp_color_preview_paint (cp, &event->area);
}
return TRUE;
}
GtkWidget *
sp_color_preview_new (guint32 rgba)
{
SPColorPreview *image;
image = (SPColorPreview*)gtk_type_new (SP_TYPE_COLOR_PREVIEW);
sp_color_preview_set_rgba32 (image, rgba);
return (GtkWidget *) image;
}
void
sp_color_preview_set_rgba32 (SPColorPreview *cp, guint32 rgba)
{
cp->rgba = rgba;
if (GTK_WIDGET_DRAWABLE (cp)) {
gtk_widget_queue_draw (GTK_WIDGET (cp));
}
}
static void
sp_color_preview_paint (SPColorPreview *cp, GdkRectangle *area)
{
GtkWidget *widget;
GdkRectangle warea, carea;
GdkRectangle wpaint, cpaint;
gint w2;
widget = GTK_WIDGET (cp);
warea.x = widget->allocation.x;
warea.y = widget->allocation.y;
warea.width = widget->allocation.width;
warea.height = widget->allocation.height;
if (!gdk_rectangle_intersect (area, &warea, &wpaint)) return;
/* Transparent area */
w2 = warea.width / 2;
carea.x = warea.x;
carea.y = warea.y;
carea.width = w2;
carea.height = warea.height;
if (gdk_rectangle_intersect (area, &carea, &cpaint)) {
nr_gdk_draw_rgba32_solid (widget->window, widget->style->black_gc,
cpaint.x, cpaint.y,
cpaint.width, cpaint.height,
cp->rgba);
}
/* Solid area */
carea.x = warea.x + w2;
carea.y = warea.y;
carea.width = warea.width - w2;
carea.height = warea.height;
if (gdk_rectangle_intersect (area, &carea, &cpaint)) {
nr_gdk_draw_rgba32_solid (widget->window, widget->style->black_gc,
cpaint.x, cpaint.y,
cpaint.width, cpaint.height,
cp->rgba | 0xff);
}
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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