Signed-off-by: Jonas Ådahl <jad...@gmail.com>
---
clients/Makefile.am | 4 ++
clients/draw.c | 197 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 201 insertions(+)
create mode 100644 clients/draw.c
diff --git a/clients/Makefile.am b/clients/Makefile.am
index 2377189..bb3954b 100644
--- a/clients/Makefile.am
+++ b/clients/Makefile.am
@@ -47,6 +47,7 @@ clients_programs = \
resizor \
eventdemo \
clickdot \
+ draw \
$(full_gl_client_programs)
desktop_shell = weston-desktop-shell
@@ -93,6 +94,9 @@ eventdemo_LDADD = $(toolkit_libs)
clickdot_SOURCES = clickdot.c
clickdot_LDADD = $(toolkit_libs)
+draw_SOURCES = draw.c
+draw_LDADD = $(toolkit_libs)
+
weston_desktop_shell_SOURCES = \
desktop-shell.c \
desktop-shell-client-protocol.h \
diff --git a/clients/draw.c b/clients/draw.c
new file mode 100644
index 0000000..544b604
--- /dev/null
+++ b/clients/draw.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright © 2012 Jonas Ådahl
+ *
+ * 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 <stdlib.h>
+#include <stdio.h>
+
+#include "window.h"
+#include "cairo-util.h"
+
+struct draw {
+ struct window *window;
+ struct widget *widget;
+ struct display *display;
+
+ cairo_surface_t *buffer;
+
+ int width, height;
+ int x, y, old_x, old_y;
+};
+
+static void
+redraw_handler(struct widget *widget, void *data)
+{
+ struct draw *draw = data;
+ struct rectangle allocation;
+ cairo_surface_t *surface;
+ cairo_t *cairo;
+ cairo_t *buffer_context;
+
+ widget_get_allocation(draw->widget, &allocation);
+
+ surface = window_get_surface(draw->window);
+ cairo = cairo_create(surface);
+ cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
+
+ if (draw->buffer == NULL) {
+ /* Initiate buffer */
+ draw->buffer =
+ cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
+ allocation.width,
+ allocation.height);
+ buffer_context = cairo_create(draw->buffer);
+
+ cairo_set_source_rgb(buffer_context, 1, 1, 1);
+ cairo_rectangle(buffer_context,
+ 0, 0,
+ allocation.width, allocation.height);
+ cairo_fill(buffer_context);
+ }
+ else
+ buffer_context = cairo_create(draw->buffer);
+
+ /* Paint buffer */
+ cairo_set_source_surface(cairo, draw->buffer,
+ allocation.x, allocation.y);
+
+ cairo_rectangle(cairo,
+ allocation.x, allocation.y,
+ allocation.width, allocation.height);
+ cairo_clip(cairo);
+ cairo_paint(cairo);
+ cairo_reset_clip(cairo);
+
+ /* Draw line between current pointer position and last */
+ if (draw->x != -1 && draw->y != -1) {
+ if (draw->old_x != -1 && draw->old_y != -1) {
+ cairo_set_line_width(cairo, 2.0);
+ cairo_set_source_rgb(cairo, 0, 0, 0);
+
+ cairo_move_to(cairo, draw->old_x, draw->old_y);
+ cairo_line_to(cairo, draw->x, draw->y);
+ cairo_stroke(cairo);
+ }
+
+ draw->old_x = draw->x;
+ draw->old_y = draw->y;
+ }
+
+ /* Copy new content to buffer */
+ buffer_context = cairo_create(draw->buffer);
+ cairo_set_source_surface(buffer_context, surface,
+ -allocation.x, -allocation.y);
+ cairo_paint(buffer_context);
+ cairo_destroy(buffer_context);
+
+ cairo_destroy(cairo);
+ cairo_surface_destroy(surface);
+}
+
+static int
+motion_handler(struct widget *widget,
+ struct input *input, uint32_t time,
+ GLfloat x, GLfloat y, void *data)
+{
+ struct draw *draw = data;
+ draw->x = x;
+ draw->y = y;
+
+ window_schedule_redraw(draw->window);
+
+ return POINTER_LEFT_PTR;
+}
+
+static void
+keyboard_focus_handler(struct window *window,
+ struct input *device, void *data)
+{
+ struct draw *draw = data;
+
+ window_schedule_redraw(draw->window);
+}
+
+static struct draw *
+create_draw(struct display *display)
+{
+ struct draw *draw;
+
+ draw = malloc(sizeof *draw);
+ if (draw == NULL)
+ return NULL;
+
+ draw->width = 1000;
+ draw->height = 600;
+ draw->x = -1;
+ draw->y = -1;
+ draw->old_x = -1;
+ draw->old_y = -1;
+
+ draw->display = display;
+ draw->window = window_create(display);
+ draw->widget = frame_create(draw->window, draw);
+ draw->buffer = NULL;
+
+ widget_set_redraw_handler(draw->widget, redraw_handler);
+
+ window_set_title(draw->window, "Wayland Draw");
+ window_set_user_data(draw->window, draw);
+ window_set_keyboard_focus_handler(draw->window,
+ keyboard_focus_handler);
+
+ widget_set_motion_handler(draw->widget, motion_handler);
+ widget_schedule_resize(draw->widget, draw->width, draw->height);
+
+ return draw;
+}
+
+static void destroy_draw(struct draw *draw)
+{
+ if (draw->buffer)
+ cairo_surface_destroy(draw->buffer);
+ widget_destroy(draw->widget);
+ window_destroy(draw->window);
+ free(draw);
+}
+
+int main(int argc, char *argv[])
+{
+ struct display *display;
+ struct draw *draw;
+
+ display = display_create(argc, argv);
+ if (display == NULL) {
+ fprintf(stderr, "failed to create display; %m\n");
+ return EXIT_FAILURE;
+ }
+
+ draw = create_draw(display);
+ if (draw == NULL) {
+ fprintf(stderr, "failed to create window\n");
+ return EXIT_FAILURE;
+ }
+
+ display_run(display);
+
+ destroy_draw(draw);
+
+ return EXIT_SUCCESS;
+}
--
1.7.9.5
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