Add window resize sample client
This is an example of how to animate window resizing. The size is
animated by a simple physics model that allows the user to cancel the
animation halfway and still look good.
diff --git a/clients/Makefile.am b/clients/Makefile.am
index 56b6a2b..c2e423c 100644
--- a/clients/Makefile.am
+++ b/clients/Makefile.am
@@ -1,4 +1,4 @@
-noinst_PROGRAMS = gears flower screenshot terminal image view dnd smoke
+noinst_PROGRAMS = gears flower screenshot terminal image view dnd smoke resizor
noinst_LTLIBRARIES = libtoytoolkit.la
INCLUDES = \
@@ -29,6 +29,7 @@
image_SOURCES = image.c
view_SOURCES = view.c
dnd_SOURCES = dnd.c
+resizor_SOURCES = resizor.c
BUILT_SOURCES = \
screenshooter-client-protocol.h \
diff --git a/clients/resizor.c b/clients/resizor.c
new file mode 100644
index 0000000..cfed126
--- /dev/null
+++ b/clients/resizor.c
@@ -0,0 +1,204 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <cairo.h>
+
+#include "wayland-util.h"
+#include "wayland-client.h"
+#include "wayland-glib.h"
+
+#include "window.h"
+
+#include <X11/keysym.h>
+
+struct resizor {
+ struct display *display;
+ struct window *window;
+ struct rectangle child_allocation;
+
+ struct {
+ double current;
+ double target;
+ double previous;
+ } height;
+};
+
+static void
+resizor_draw(struct resizor *resizor)
+{
+ cairo_surface_t *surface;
+ cairo_t *cr;
+
+ window_draw(resizor->window);
+
+ window_get_child_rectangle(resizor->window,
+ &resizor->child_allocation);
+
+ surface = window_get_surface(resizor->window);
+
+ cr = cairo_create(surface);
+ cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
+ cairo_rectangle(cr,
+ resizor->child_allocation.x,
+ resizor->child_allocation.y,
+ resizor->child_allocation.width,
+ resizor->child_allocation.height);
+ cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
+ cairo_fill(cr);
+ cairo_destroy(cr);
+
+ cairo_surface_destroy(surface);
+
+ window_flush(resizor->window);
+}
+
+static void
+redraw_handler(struct window *window, void *data)
+{
+ struct resizor *resizor = data;
+
+ resizor_draw(resizor);
+}
+
+static void
+keyboard_focus_handler(struct window *window,
+ struct input *device, void *data)
+{
+ struct resizor *resizor = data;
+
+ window_schedule_redraw(resizor->window);
+}
+
+static void
+frame_callback(void *data, uint32_t time)
+{
+ struct resizor *resizor = data;
+ double force, height;
+
+ height = resizor->height.current;
+ force = (resizor->height.target - height) / 10.0 +
+ (resizor->height.previous - height);
+
+ resizor->height.current =
+ height + (height - resizor->height.previous) + force;
+ resizor->height.previous = height;
+
+ if (resizor->height.current >= 400) {
+ resizor->height.current = 400;
+ resizor->height.previous = 400;
+ }
+
+ if (resizor->height.current <= 200) {
+ resizor->height.current = 200;
+ resizor->height.previous = 200;
+ }
+
+ resizor->child_allocation.height = height + 0.5;
+ window_set_child_size(resizor->window,
+ &resizor->child_allocation);
+
+ if ((int) (height + 0.5) != resizor->height.target) {
+ window_schedule_redraw(resizor->window);
+ wl_display_frame_callback(display_get_display(resizor->display),
+ frame_callback, resizor);
+ }
+}
+
+static void
+key_handler(struct window *window, uint32_t key, uint32_t sym,
+ uint32_t state, uint32_t modifiers, void *data)
+{
+ struct resizor *resizor = data;
+
+ if (state == 0)
+ return;
+
+ switch (sym) {
+ case XK_F1:
+ resizor->height.target = 400;
+ resizor->height.current = resizor->child_allocation.height;
+ frame_callback(resizor, 0);
+ break;
+ case XK_F2:
+ resizor->height.target = 200;
+ resizor->height.current = resizor->child_allocation.height;
+ frame_callback(resizor, 0);
+ break;
+ }
+}
+
+static struct resizor *
+resizor_create(struct display *display)
+{
+ struct resizor *resizor;
+
+ resizor = malloc(sizeof *resizor);
+ if (resizor == NULL)
+ return resizor;
+ memset(resizor, 0, sizeof *resizor);
+
+ resizor->window = window_create(display, "Wayland Resizor",
+ 100, 100, 500, 400);
+ resizor->display = display;
+
+ window_set_key_handler(resizor->window, key_handler);
+ window_set_user_data(resizor->window, resizor);
+ window_set_redraw_handler(resizor->window, redraw_handler);
+ window_set_keyboard_focus_handler(resizor->window,
+ keyboard_focus_handler);
+
+ resizor->child_allocation.x = 0;
+ resizor->child_allocation.y = 0;
+ resizor->child_allocation.width = 300;
+ resizor->child_allocation.height = 400;
+ resizor->height.current = 400;
+ resizor->height.previous = 400;
+ resizor->height.target = 400;
+
+ window_set_child_size(resizor->window, &resizor->child_allocation);
+
+ resizor_draw(resizor);
+
+ return resizor;
+}
+
+int
+main(int argc, char *argv[])
+{
+ struct display *d;
+
+ d = display_create(&argc, &argv, NULL);
+ if (d == NULL) {
+ fprintf(stderr, "failed to create display: %m\n");
+ return -1;
+ }
+
+ resizor_create (d);
+
+ display_run(d);
+
+ return 0;
+}