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ui: Port testgradient example to GTK3

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https://bugzilla.gnome.org/show_bug.cgi?id=636301
This commit is contained in:
Benjamin Otte 2010-12-02 15:50:02 +01:00
parent 161c1088f9
commit d746591894
1 changed files with 31 additions and 56 deletions
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81
src/ui/testgradient.c
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@ -23,19 +23,17 @@
#include "gradient.h" #include "gradient.h"
#include <gtk/gtk.h> #include <gtk/gtk.h>
typedef void (* RenderGradientFunc) (GdkDrawable *drawable, typedef void (* RenderGradientFunc) (cairo_t *cr,
cairo_t *cr,
int width, int width,
int height); int height);
static void static void
draw_checkerboard (GdkDrawable *drawable, draw_checkerboard (cairo_t *cr,
int width, int width,
int height) int height)
{ {
gint i, j, xcount, ycount; gint i, j, xcount, ycount;
GdkColor color1, color2; GdkColor color1, color2;
cairo_t *cr;
#define CHECK_SIZE 10 #define CHECK_SIZE 10
#define SPACING 2 #define SPACING 2
@ -48,8 +46,6 @@ draw_checkerboard (GdkDrawable *drawable,
color2.green = 50000; color2.green = 50000;
color2.blue = 50000; color2.blue = 50000;
cr = gdk_cairo_create (drawable);
xcount = 0; xcount = 0;
i = SPACING; i = SPACING;
while (i < width) while (i < width)
@ -77,13 +73,10 @@ draw_checkerboard (GdkDrawable *drawable,
i += CHECK_SIZE + SPACING; i += CHECK_SIZE + SPACING;
++xcount; ++xcount;
} }
cairo_destroy (cr);
} }
static void static void
render_simple (GdkDrawable *drawable, render_simple (cairo_t *cr,
cairo_t *cr,
int width, int height, int width, int height,
MetaGradientType type, MetaGradientType type,
gboolean with_alpha) gboolean with_alpha)
@ -115,7 +108,7 @@ render_simple (GdkDrawable *drawable,
alphas, G_N_ELEMENTS (alphas), alphas, G_N_ELEMENTS (alphas),
META_GRADIENT_HORIZONTAL); META_GRADIENT_HORIZONTAL);
draw_checkerboard (drawable, width, height); draw_checkerboard (cr , width, height);
} }
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0); gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
@ -126,40 +119,35 @@ render_simple (GdkDrawable *drawable,
} }
static void static void
render_vertical_func (GdkDrawable *drawable, render_vertical_func (cairo_t *cr,
cairo_t *cr,
int width, int height) int width, int height)
{ {
render_simple (drawable, cr, width, height, META_GRADIENT_VERTICAL, FALSE); render_simple (cr, width, height, META_GRADIENT_VERTICAL, FALSE);
} }
static void static void
render_horizontal_func (GdkDrawable *drawable, render_horizontal_func (cairo_t *cr,
cairo_t *cr,
int width, int height) int width, int height)
{ {
render_simple (drawable, cr, width, height, META_GRADIENT_HORIZONTAL, FALSE); render_simple (cr, width, height, META_GRADIENT_HORIZONTAL, FALSE);
} }
static void static void
render_diagonal_func (GdkDrawable *drawable, render_diagonal_func (cairo_t *cr,
cairo_t *cr,
int width, int height) int width, int height)
{ {
render_simple (drawable, cr, width, height, META_GRADIENT_DIAGONAL, FALSE); render_simple (cr, width, height, META_GRADIENT_DIAGONAL, FALSE);
} }
static void static void
render_diagonal_alpha_func (GdkDrawable *drawable, render_diagonal_alpha_func (cairo_t *cr,
cairo_t *cr,
int width, int height) int width, int height)
{ {
render_simple (drawable, cr, width, height, META_GRADIENT_DIAGONAL, TRUE); render_simple (cr, width, height, META_GRADIENT_DIAGONAL, TRUE);
} }
static void static void
render_multi (GdkDrawable *drawable, render_multi (cairo_t *cr,
cairo_t *cr,
int width, int height, int width, int height,
MetaGradientType type) MetaGradientType type)
{ {
@ -186,32 +174,28 @@ render_multi (GdkDrawable *drawable,
} }
static void static void
render_vertical_multi_func (GdkDrawable *drawable, render_vertical_multi_func (cairo_t *cr,
cairo_t *cr,
int width, int height) int width, int height)
{ {
render_multi (drawable, cr, width, height, META_GRADIENT_VERTICAL); render_multi (cr, width, height, META_GRADIENT_VERTICAL);
} }
static void static void
render_horizontal_multi_func (GdkDrawable *drawable, render_horizontal_multi_func (cairo_t *cr,
cairo_t *cr,
int width, int height) int width, int height)
{ {
render_multi (drawable, cr, width, height, META_GRADIENT_HORIZONTAL); render_multi (cr, width, height, META_GRADIENT_HORIZONTAL);
} }
static void static void
render_diagonal_multi_func (GdkDrawable *drawable, render_diagonal_multi_func (cairo_t *cr,
cairo_t *cr,
int width, int height) int width, int height)
{ {
render_multi (drawable, cr, width, height, META_GRADIENT_DIAGONAL); render_multi (cr, width, height, META_GRADIENT_DIAGONAL);
} }
static void static void
render_interwoven_func (GdkDrawable *drawable, render_interwoven_func (cairo_t *cr,
cairo_t *cr,
int width, int height) int width, int height)
{ {
GdkPixbuf *pixbuf; GdkPixbuf *pixbuf;
@ -235,31 +219,22 @@ render_interwoven_func (GdkDrawable *drawable,
} }
static gboolean static gboolean
expose_callback (GtkWidget *widget, draw_callback (GtkWidget *widget,
GdkEventExpose *event, cairo_t *cr,
gpointer data) gpointer data)
{ {
RenderGradientFunc func = data; RenderGradientFunc func = data;
GdkWindow *window;
GtkAllocation allocation;
GtkStyle *style; GtkStyle *style;
cairo_t *cr;
style = gtk_widget_get_style (widget); style = gtk_widget_get_style (widget);
gtk_widget_get_allocation (widget, &allocation);
window = gtk_widget_get_window (widget);
cr = gdk_cairo_create (window);
gdk_cairo_set_source_color (cr, &style->fg[gtk_widget_get_state (widget)]); gdk_cairo_set_source_color (cr, &style->fg[gtk_widget_get_state (widget)]);
(* func) (gtk_widget_get_window (widget), (* func) (cr,
cr, gtk_widget_get_allocated_width (widget),
allocation.width, gtk_widget_get_allocated_height (widget));
allocation.height);
cairo_destroy (cr); return FALSE;
return TRUE;
} }
static GtkWidget* static GtkWidget*
@ -280,8 +255,8 @@ create_gradient_window (const char *title,
gtk_window_set_default_size (GTK_WINDOW (window), 175, 175); gtk_window_set_default_size (GTK_WINDOW (window), 175, 175);
g_signal_connect (G_OBJECT (drawing_area), g_signal_connect (G_OBJECT (drawing_area),
"expose_event", "draw",
G_CALLBACK (expose_callback), G_CALLBACK (draw_callback),
func); func);
gtk_container_add (GTK_CONTAINER (window), drawing_area); gtk_container_add (GTK_CONTAINER (window), drawing_area);