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testinput: Make this work again

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This test was not updated to using a draw func instead
of the ::draw signal yet. At the same time, make it use
::size-allocate instead of ::configure-event.
This commit is contained in:
Matthias Clasen 2018-01-01 17:56:35 -05:00
parent 12e4f4256d
commit 48bfc9badf
1 changed files with 30 additions and 25 deletions
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55
tests/testinput.c
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@ -32,39 +32,46 @@
static cairo_surface_t *surface = NULL;
/* Create a new backing surface of the appropriate size */
static gint
configure_event (GtkWidget *widget, GdkEventConfigure *event)
static void
size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
int baseline,
GdkRectangle *clip,
gpointer data)
{
GtkAllocation allocation;
cairo_t *cr;
if (surface)
cairo_surface_destroy (surface);
{
cairo_surface_destroy (surface);
surface = NULL;
}
gtk_widget_get_allocation (widget, &allocation);
if (gtk_widget_get_window (widget))
{
cairo_t *cr;
surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
allocation.width,
allocation.height);
cr = cairo_create (surface);
surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
gtk_widget_get_width (widget),
gtk_widget_get_height (widget));
cr = cairo_create (surface);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_destroy (cr);
return TRUE;
cairo_destroy (cr);
}
}
/* Refill the screen from the backing surface */
static gboolean
draw (GtkWidget *widget, cairo_t *cr)
static void
draw (GtkDrawingArea *drawing_area,
cairo_t *cr,
int width,
int height,
gpointer data)
{
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
return FALSE;
}
/* Draw a rectangle on the screen, size depending on pressure,
@ -280,10 +287,8 @@ main (int argc, char *argv[])
/* Signals used to handle backing surface */
g_signal_connect (drawing_area, "draw",
G_CALLBACK (draw), NULL);
g_signal_connect (drawing_area, "configure_event",
G_CALLBACK (configure_event), NULL);
gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (drawing_area), draw, NULL, NULL);
g_signal_connect (drawing_area, "size-allocate", G_CALLBACK (size_allocate), NULL);
/* Event signals */