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-rw-r--r--frontends/atari/redrawslots.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/frontends/atari/redrawslots.c b/frontends/atari/redrawslots.c
new file mode 100644
index 000000000..f5351866a
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+++ b/frontends/atari/redrawslots.c
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2011 Ole Loots <ole@monochrom.net>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf 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; version 2 of the License.
+ *
+ * NetSurf 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 <stdbool.h>
+
+#include "utils/utils.h"
+
+#include "atari/redrawslots.h"
+#include "atari/gemtk/gemtk.h"
+
+void redraw_slots_init(struct s_redrw_slots * slots, short size)
+{
+ // TODO: allocate slots dynamically!
+ slots->size = MIN( MAX_REDRW_SLOTS , size);
+ slots->areas_used = 0;
+}
+
+void redraw_slots_free(struct s_redrw_slots * slots)
+{
+ // TOOD: free areas...
+}
+
+
+static inline bool rect_intersect( struct rect * box1, struct rect * box2 )
+{
+ if (box2->x1 < box1->x0)
+ return false;
+
+ if (box2->y1 < box1->y0)
+ return false;
+
+ if (box2->x0 > box1->x1)
+ return false;
+
+ if (box2->y0 > box1->y1)
+ return false;
+
+ return true;
+}
+
+
+void redraw_slot_schedule_grect(struct s_redrw_slots * slots, GRECT *area,
+ bool force)
+{
+ redraw_slot_schedule(slots, area->g_x, area->g_y,
+ area->g_x + area->g_w, area->g_y + area->g_h, force);
+}
+
+/*
+ schedule redraw coords.
+*/
+void redraw_slot_schedule(struct s_redrw_slots * slots, short x0, short y0,
+ short x1, short y1, bool force)
+{
+ int i = 0;
+ struct rect area;
+
+ area.x0 = x0;
+ area.y0 = y0;
+ area.x1 = x1;
+ area.y1 = y1;
+
+ if (force == false) {
+ for (i=0; i<slots->areas_used; i++) {
+ if (slots->areas[i].x0 <= x0
+ && slots->areas[i].x1 >= x1
+ && slots->areas[i].y0 <= y0
+ && slots->areas[i].y1 >= y1) {
+ /* the area is already queued for redraw */
+ return;
+ } else {
+ if (rect_intersect(&slots->areas[i], &area )) {
+ slots->areas[i].x0 = MIN(slots->areas[i].x0, x0);
+ slots->areas[i].y0 = MIN(slots->areas[i].y0, y0);
+ slots->areas[i].x1 = MAX(slots->areas[i].x1, x1);
+ slots->areas[i].y1 = MAX(slots->areas[i].y1, y1);
+ return;
+ }
+ }
+ }
+ }
+
+ if (slots->areas_used < slots->size) {
+ slots->areas[slots->areas_used].x0 = x0;
+ slots->areas[slots->areas_used].x1 = x1;
+ slots->areas[slots->areas_used].y0 = y0;
+ slots->areas[slots->areas_used].y1 = y1;
+ slots->areas_used++;
+ } else {
+ /*
+ we are out of available slots, merge box with last slot
+ this is dumb... but also a very rare case.
+ */
+ slots->areas[slots->size-1].x0 = MIN(slots->areas[i].x0, x0);
+ slots->areas[slots->size-1].y0 = MIN(slots->areas[i].y0, y0);
+ slots->areas[slots->size-1].x1 = MAX(slots->areas[i].x1, x1);
+ slots->areas[slots->size-1].y1 = MAX(slots->areas[i].y1, y1);
+ }
+
+ return;
+}
+
+void redraw_slots_remove_area(struct s_redrw_slots * slots, int i)
+{
+ int x;
+ for (x = i+1; i<slots->areas_used; x++) {
+ slots->areas[x-1] = slots->areas[x];
+ }
+ slots->areas_used--;
+}