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authorThomas White <taw@bitwiz.org.uk>2011-03-07 20:59:35 +0100
committerThomas White <taw@physics.org>2012-02-22 15:27:18 +0100
commitba75f4dcefffcfe71c1b7295e94b28f90b149d17 (patch)
treea26772d434ef8db840f3e62c2bdc9201aa6a2795 /src/dw-hdfsee.c
parent92cda0d130227584499414009cdc64d64c3ada98 (diff)
hdfsee: Only redraw the necessary part of the window on expose
Diffstat (limited to 'src/dw-hdfsee.c')
-rw-r--r--src/dw-hdfsee.c160
1 files changed, 85 insertions, 75 deletions
diff --git a/src/dw-hdfsee.c b/src/dw-hdfsee.c
index 61eab6a8..7db66f86 100644
--- a/src/dw-hdfsee.c
+++ b/src/dw-hdfsee.c
@@ -45,78 +45,6 @@ static void displaywindow_error(DisplayWindow *dw, const char *message)
}
-static void displaywindow_update(DisplayWindow *dw)
-{
- gint width;
- GdkGeometry geom;
-
- if ( dw->image == NULL ) {
- dw->width = 320;
- dw->height = 320;
- } else {
-
- double min_x, min_y, max_x, max_y;
-
- get_pixel_extents(dw->image->det,
- &min_x, &min_y, &max_x, &max_y);
-
- if ( min_x > 0.0 ) min_x = 0.0;
- if ( max_x < 0.0 ) max_x = 0.0;
- if ( min_y > 0.0 ) min_y = 0.0;
- if ( max_y < 0.0 ) max_y = 0.0;
- dw->min_x = min_x;
- dw->max_x = max_x;
- dw->min_y = min_y;
- dw->max_y = max_y;
-
- dw->width = (max_x - min_x) / dw->binning;
- dw->height = (max_y - min_y) / dw->binning;
-
- /* Add a thin border */
- dw->width += 2.0;
- dw->height += 2.0;
- }
-
- width = dw->width;
- if ( dw->show_col_scale ) width += 20;
-
- gtk_widget_set_size_request(GTK_WIDGET(dw->drawingarea), width,
- dw->height);
- geom.min_width = -1;
- geom.min_height = -1;
- geom.max_width = -1;
- geom.max_height = -1;
- gtk_window_set_geometry_hints(GTK_WINDOW(dw->window),
- GTK_WIDGET(dw->drawingarea), &geom,
- GDK_HINT_MIN_SIZE | GDK_HINT_MAX_SIZE);
-
- /* Free old pixbufs */
- if ( dw->pixbufs != NULL ) {
- int i;
- for ( i=0; i<dw->n_pixbufs; i++ ) {
- gdk_pixbuf_unref(dw->pixbufs[i]);
- }
- free(dw->pixbufs);
- }
- if ( dw->col_scale != NULL ) {
- gdk_pixbuf_unref(dw->col_scale);
- }
-
- if ( dw->image != NULL ) {
- dw->pixbufs = render_panels(dw->image, dw->binning,
- dw->scale, dw->boostint,
- &dw->n_pixbufs);
- } else {
- dw->pixbufs = NULL;
- }
-
- dw->col_scale = render_get_colour_scale(20, dw->height, dw->scale);
-
- /* Schedule redraw */
- gdk_window_invalidate_rect(dw->drawingarea->window, NULL, FALSE);
-}
-
-
/* Window closed - clean up */
static gint displaywindow_closed(GtkWidget *window, DisplayWindow *dw)
{
@@ -313,15 +241,95 @@ static int draw_stuff(cairo_surface_t *surf, DisplayWindow *dw)
}
+static void displaywindow_update(DisplayWindow *dw)
+{
+ gint width;
+ GdkGeometry geom;
+
+ if ( dw->image == NULL ) {
+ dw->width = 320;
+ dw->height = 320;
+ } else {
+
+ double min_x, min_y, max_x, max_y;
+
+ get_pixel_extents(dw->image->det,
+ &min_x, &min_y, &max_x, &max_y);
+
+ if ( min_x > 0.0 ) min_x = 0.0;
+ if ( max_x < 0.0 ) max_x = 0.0;
+ if ( min_y > 0.0 ) min_y = 0.0;
+ if ( max_y < 0.0 ) max_y = 0.0;
+ dw->min_x = min_x;
+ dw->max_x = max_x;
+ dw->min_y = min_y;
+ dw->max_y = max_y;
+
+ dw->width = (max_x - min_x) / dw->binning;
+ dw->height = (max_y - min_y) / dw->binning;
+
+ /* Add a thin border */
+ dw->width += 2.0;
+ dw->height += 2.0;
+ }
+
+ width = dw->width;
+ if ( dw->show_col_scale ) width += 20;
+
+ gtk_widget_set_size_request(GTK_WIDGET(dw->drawingarea), width,
+ dw->height);
+ geom.min_width = -1;
+ geom.min_height = -1;
+ geom.max_width = -1;
+ geom.max_height = -1;
+ gtk_window_set_geometry_hints(GTK_WINDOW(dw->window),
+ GTK_WIDGET(dw->drawingarea), &geom,
+ GDK_HINT_MIN_SIZE | GDK_HINT_MAX_SIZE);
+
+ /* Free old pixbufs */
+ if ( dw->pixbufs != NULL ) {
+ int i;
+ for ( i=0; i<dw->n_pixbufs; i++ ) {
+ gdk_pixbuf_unref(dw->pixbufs[i]);
+ }
+ free(dw->pixbufs);
+ }
+ if ( dw->col_scale != NULL ) {
+ gdk_pixbuf_unref(dw->col_scale);
+ }
+
+ if ( dw->image != NULL ) {
+ dw->pixbufs = render_panels(dw->image, dw->binning,
+ dw->scale, dw->boostint,
+ &dw->n_pixbufs);
+ } else {
+ dw->pixbufs = NULL;
+ }
+
+ dw->col_scale = render_get_colour_scale(20, dw->height, dw->scale);
+
+ if ( dw->surf != NULL ) cairo_surface_destroy(dw->surf);
+ dw->surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
+ dw->width, dw->height);
+ draw_stuff(dw->surf, dw);
+
+ /* Schedule redraw */
+ gdk_window_invalidate_rect(dw->drawingarea->window, NULL, FALSE);
+}
+
+
static gboolean displaywindow_expose(GtkWidget *da, GdkEventExpose *event,
DisplayWindow *dw)
{
cairo_t *cr;
- cairo_surface_t *surf;
cr = gdk_cairo_create(da->window);
- surf = cairo_get_target(cr);
- draw_stuff(surf, dw);
+
+ cairo_set_source_surface(cr, dw->surf, 0.0, 0.0);
+ cairo_rectangle(cr, event->area.x, event->area.y,
+ event->area.width, event->area.height);
+ cairo_fill(cr);
+
cairo_destroy(cr);
return FALSE;
@@ -347,6 +355,7 @@ static int write_png(const char *filename, DisplayWindow *dw)
static gint displaywindow_close(GtkWidget *widget, DisplayWindow *dw)
{
+ cairo_surface_destroy(dw->surf);
gtk_widget_destroy(dw->window);
return 0;
}
@@ -1506,6 +1515,7 @@ DisplayWindow *displaywindow_open(const char *filename, const char *peaks,
dw->cmfilter = cmfilter;
dw->noisefilter = noisefilter;
dw->not_ready_yet = 1;
+ dw->surf = NULL;
/* Open the file, if any */
if ( filename != NULL ) {