From: Juan Zhao <juan.j.z...@linux.intel.com>

F12:default
F11:scale
F10:driver
F9:fill
F7: set toplevel to back
---
 clients/Makefile.am   |    6 +-
 clients/simple-rect.c |  681 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 686 insertions(+), 1 deletions(-)
 create mode 100644 clients/simple-rect.c

diff --git a/clients/Makefile.am b/clients/Makefile.am
index b64c38a..a790095 100644
--- a/clients/Makefile.am
+++ b/clients/Makefile.am
@@ -14,7 +14,8 @@ if BUILD_SIMPLE_CLIENTS
 simple_clients_programs =                      \
        simple-egl                              \
        simple-shm                              \
-       simple-touch
+       simple-touch                            \
+       simple-rect
 
 simple_egl_SOURCES = simple-egl.c
 simple_egl_LDADD = $(SIMPLE_CLIENT_LIBS) -lm
@@ -24,6 +25,9 @@ simple_shm_LDADD = $(SIMPLE_CLIENT_LIBS)
 
 simple_touch_SOURCES = simple-touch.c
 simple_touch_LDADD = $(SIMPLE_CLIENT_LIBS)
+
+simple_rect_SOURCES = simple-rect.c
+simple_rect_LDADD = $(SIMPLE_CLIENT_LIBS) -lm -lxkbcommon
 endif
 
 if BUILD_CLIENTS
diff --git a/clients/simple-rect.c b/clients/simple-rect.c
new file mode 100644
index 0000000..c3a301b
--- /dev/null
+++ b/clients/simple-rect.c
@@ -0,0 +1,681 @@
+/*
+ * Copyright © 2011 Benjamin Franzke
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <math.h>
+#include <assert.h>
+#include <signal.h>
+#include <linux/input.h>
+#include <X11/extensions/XKBcommon.h>
+#include <X11/keysym.h>
+#include <glib.h>
+
+#include <wayland-client.h>
+#include <wayland-egl.h>
+
+#include <GLES2/gl2.h>
+#include <EGL/egl.h>
+
+#define WINDOW_WIDTH 1280
+#define WINDOW_HEIGHT 1024
+
+static void
+redraw(void *data, struct wl_callback *callback, uint32_t time);
+
+struct display {
+       struct wl_display *display;
+       struct wl_compositor *compositor;
+       struct wl_output *output;
+       struct wl_shell *shell;
+       struct {
+               EGLDisplay dpy;
+               EGLContext ctx;
+               EGLConfig conf;
+       } egl;
+       uint32_t mask;
+
+       struct xkb_desc *xkb;
+};
+
+struct window {
+       struct display *display;
+       struct {
+               int width, height;
+       } geometry;
+       struct {
+               GLuint fbo;
+               GLuint color_rbo;
+
+               GLuint program;
+               GLuint rotation_uniform;
+
+               GLuint pos;
+               GLuint col;
+       } gl;
+
+       struct wl_egl_window *native;
+       struct wl_surface *surface;
+       struct wl_shell_surface *shell_surface;
+       struct wl_callback *callback;
+       EGLSurface egl_surface;
+       uint32_t fs_method;
+};
+
+struct input {
+       struct display *display;
+       struct wl_input_device *input_device;
+       uint32_t modifiers;
+       int32_t x, y, sx, sy;
+       struct wl_list link;
+       struct window *keyboard_focus;
+};
+
+static const char *vert_shader_text =
+       "uniform mat4 rotation;\n"
+       "attribute vec4 pos;\n"
+       "attribute vec4 color;\n"
+       "varying vec4 v_color;\n"
+       "void main() {\n"
+       "  gl_Position = rotation * pos;\n"
+       "  v_color = color;\n"
+       "}\n";
+
+static const char *frag_shader_text =
+       "precision mediump float;\n"
+       "varying vec4 v_color;\n"
+       "void main() {\n"
+       "  gl_FragColor = v_color;\n"
+       "}\n";
+
+static void
+handle_configure(void *data, struct wl_shell_surface *shell_surface,
+                uint32_t time, uint32_t edges,
+                int32_t width, int32_t height)
+{
+       struct window *window = data;
+       uint32_t ret;
+       static const EGLint surface_attribs[] = {
+               EGL_ALPHA_FORMAT, EGL_ALPHA_FORMAT_PRE,
+               EGL_NONE
+       };
+
+       if (window->fs_method != WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT)
+               return;
+
+       window->geometry.width = width;
+       window->geometry.height = height;
+       eglMakeCurrent(window->display->egl.dpy, NULL,
+                            NULL, window->display->egl.ctx);
+
+       if ( window->egl_surface ) {
+               eglDestroySurface(window->display->egl.dpy, 
window->egl_surface);
+               window->egl_surface = NULL;
+       }
+       if ( window->native ) {
+               wl_egl_window_destroy(window->native);
+               window->native = NULL;
+       }
+
+       window->native =
+               wl_egl_window_create(window->surface,
+                                    window->geometry.width,
+                                    window->geometry.height);
+
+       window->egl_surface =
+               eglCreateWindowSurface(window->display->egl.dpy,
+                                      window->display->egl.conf,
+                                      window->native,
+                                      surface_attribs);
+
+       ret = eglMakeCurrent(window->display->egl.dpy, window->egl_surface,
+                            window->egl_surface, window->display->egl.ctx);
+       assert(ret == EGL_TRUE);
+
+       glViewport(0, 0, window->geometry.width, window->geometry.height);
+       redraw(window, NULL, 0);
+}
+
+static const struct wl_shell_surface_listener shell_surface_listener = {
+       handle_configure,
+};
+
+static void
+destroy_surface(struct window *window)
+{
+       wl_egl_window_destroy(window->native);
+
+       wl_shell_surface_destroy(window->shell_surface);
+       wl_surface_destroy(window->surface);
+
+       if (window->callback)
+               wl_callback_destroy(window->callback);
+}
+static void
+init_egl(struct display *display)
+{
+       static const EGLint context_attribs[] = {
+               EGL_CONTEXT_CLIENT_VERSION, 2,
+               EGL_NONE
+       };
+
+       static const EGLint config_attribs[] = {
+               EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+               EGL_RED_SIZE, 1,
+               EGL_GREEN_SIZE, 1,
+               EGL_BLUE_SIZE, 1,
+               EGL_ALPHA_SIZE, 1,
+               EGL_DEPTH_SIZE, 1,
+               EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+               EGL_NONE
+       };
+
+       EGLint major, minor, n;
+       EGLBoolean ret;
+
+       display->egl.dpy = eglGetDisplay(display->display);
+       assert(display->egl.dpy);
+
+       ret = eglInitialize(display->egl.dpy, &major, &minor);
+       assert(ret == EGL_TRUE);
+       ret = eglBindAPI(EGL_OPENGL_ES_API);
+       assert(ret == EGL_TRUE);
+
+       assert(eglChooseConfig(display->egl.dpy, config_attribs,
+                              &display->egl.conf, 1, &n) && n == 1);
+
+       display->egl.ctx = eglCreateContext(display->egl.dpy,
+                                           display->egl.conf,
+                                           EGL_NO_CONTEXT, context_attribs);
+       assert(display->egl.ctx);
+}
+
+static GLuint
+create_shader(struct window *window, const char *source, GLenum shader_type)
+{
+       GLuint shader;
+       GLint status;
+
+       shader = glCreateShader(shader_type);
+       assert(shader != 0);
+
+       glShaderSource(shader, 1, (const char **) &source, NULL);
+       glCompileShader(shader);
+
+       glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
+       if (!status) {
+               char log[1000];
+               GLsizei len;
+               glGetShaderInfoLog(shader, 1000, &len, log);
+               fprintf(stderr, "Error: compiling %s: %*s\n",
+                       shader_type == GL_VERTEX_SHADER ? "vertex" : "fragment",
+                       len, log);
+               exit(1);
+       }
+
+       return shader;
+}
+
+static void
+init_gl(struct window *window)
+{
+       GLuint frag, vert;
+       GLint status;
+
+       glViewport(0, 0, window->geometry.width, window->geometry.height);
+
+       frag = create_shader(window, frag_shader_text, GL_FRAGMENT_SHADER);
+       vert = create_shader(window, vert_shader_text, GL_VERTEX_SHADER);
+
+       window->gl.program = glCreateProgram();
+       glAttachShader(window->gl.program, frag);
+       glAttachShader(window->gl.program, vert);
+       glLinkProgram(window->gl.program);
+
+       glGetProgramiv(window->gl.program, GL_LINK_STATUS, &status);
+       if (!status) {
+               char log[1000];
+               GLsizei len;
+               glGetProgramInfoLog(window->gl.program, 1000, &len, log);
+               fprintf(stderr, "Error: linking:\n%*s\n", len, log);
+               exit(1);
+       }
+
+       glUseProgram(window->gl.program);
+
+       window->gl.pos = 0;
+       window->gl.pos = 1;
+
+       glBindAttribLocation(window->gl.program, window->gl.pos, "pos");
+       glBindAttribLocation(window->gl.program, window->gl.col, "color");
+       glLinkProgram(window->gl.program);
+
+       window->gl.rotation_uniform =
+               glGetUniformLocation(window->gl.program, "rotation");
+}
+
+static void
+create_surface(struct window *window)
+{
+       struct display *display = window->display;
+       EGLBoolean ret;
+       static const EGLint surface_attribs[] = {
+               EGL_ALPHA_FORMAT, EGL_ALPHA_FORMAT_PRE,
+               EGL_NONE
+       };
+
+       window->surface = wl_compositor_create_surface(display->compositor);
+       wl_surface_set_user_data(window->surface, window);
+       window->shell_surface = wl_shell_get_shell_surface(display->shell,
+                                                          window->surface);
+       wl_shell_surface_set_user_data(window->shell_surface, window);
+       window->native =
+               wl_egl_window_create(window->surface,
+                                    window->geometry.width,
+                                    window->geometry.height);
+       window->egl_surface =
+               eglCreateWindowSurface(display->egl.dpy,
+                                      display->egl.conf,
+                                      window->native,
+                                      surface_attribs);
+
+       wl_shell_surface_add_listener(window->shell_surface,
+                                     &shell_surface_listener, window);
+
+       wl_shell_surface_set_toplevel(window->shell_surface);
+
+       ret = eglMakeCurrent(window->display->egl.dpy, window->egl_surface,
+                            window->egl_surface, window->display->egl.ctx);
+       assert(ret == EGL_TRUE);
+}
+
+static const struct wl_callback_listener frame_listener;
+
+static void
+redraw(void *data, struct wl_callback *callback, uint32_t time)
+{
+       struct window *window = data;
+       static const GLfloat verts[4][2] = {
+               { -1, -1 },
+               {  1, -1 },
+               {  1,  1 },
+               { -1,  1 }
+       };
+       static const GLfloat colors[4][3] = {
+               { 1, 0, 0 },
+               { 0, 1, 0 },
+               { 0, 1, 1 },
+               { 0, 0, 1 }
+       };
+       GLfloat angle;
+       GLfloat rotation[4][4] = {
+               { 1, 0, 0, 0 },
+               { 0, 1, 0, 0 },
+               { 0, 0, 1, 0 },
+               { 0, 0, 0, 1 }
+       };
+       /*static const int32_t speed_div = 5;*/
+       static uint32_t start_time = 0;
+
+       if (start_time == 0)
+               start_time = time;
+
+       /*angle = ((time-start_time) / speed_div) % 360 * M_PI / 180.0;*/
+       angle = 0;
+       rotation[0][0] =  cos(angle);
+       rotation[0][2] =  sin(angle);
+       rotation[2][0] = -sin(angle);
+       rotation[2][2] =  cos(angle);
+
+       glUniformMatrix4fv(window->gl.rotation_uniform, 1, GL_FALSE,
+                          (GLfloat *) rotation);
+
+       glClearColor(0.0, 0.0, 0.0, 0.5);
+       glClear(GL_COLOR_BUFFER_BIT);
+
+       glVertexAttribPointer(window->gl.pos, 2, GL_FLOAT, GL_FALSE, 0, verts);
+       glVertexAttribPointer(window->gl.col, 3, GL_FLOAT, GL_FALSE, 0, colors);
+       glEnableVertexAttribArray(window->gl.pos);
+       glEnableVertexAttribArray(window->gl.col);
+
+       glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+       glDisableVertexAttribArray(window->gl.pos);
+       glDisableVertexAttribArray(window->gl.col);
+
+       glFlush();
+
+       eglSwapBuffers(window->display->egl.dpy, window->egl_surface);
+       if (callback)
+               wl_callback_destroy(callback);
+       window->callback = wl_surface_frame(window->surface);
+       wl_callback_add_listener(window->callback, &frame_listener, window);
+}
+
+static const struct wl_callback_listener frame_listener = {
+       redraw
+};
+
+#define FRAMERATE 0
+static void
+key_handler(struct input *input, uint32_t time,
+           uint32_t key, uint32_t sym, uint32_t state)
+{
+       struct window *window = input->keyboard_focus;
+       uint32_t modifiers = input->modifiers;
+
+       if ((modifiers & XKB_COMMON_CONTROL_MASK) &&
+           (modifiers & XKB_COMMON_SHIFT_MASK) &&
+           state)
+               return;
+
+       fprintf(stderr, "key press\n");
+       switch (sym) {
+       case XK_F12:
+               if (!state)
+                       break;
+               window->fs_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
+               wl_shell_surface_set_fullscreen(window->shell_surface,
+                                               window->fs_method,
+                                               FRAMERATE,
+                                               window->display->output);
+               break;
+       case XK_F11:
+               if (!state)
+                       break;
+               window->fs_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_SCALE;
+               wl_shell_surface_set_fullscreen(window->shell_surface,
+                                               window->fs_method,
+                                               FRAMERATE,
+                                               window->display->output);
+               break;
+       case XK_F10:
+               if (!state)
+                       break;
+               window->fs_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER;
+               wl_shell_surface_set_fullscreen(window->shell_surface,
+                                               window->fs_method,
+                                               FRAMERATE,
+                                               window->display->output);
+               break;
+       case XK_F9:
+               if (!state)
+                       break;
+               window->fs_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_FILL;
+               wl_shell_surface_set_fullscreen(window->shell_surface,
+                                               window->fs_method,
+                                               FRAMERATE,
+                                               window->display->output);
+               break;
+       case XK_F7:
+               if (!state)
+                       break;
+               window->fs_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
+               wl_shell_surface_set_toplevel(window->shell_surface);
+               handle_configure(window, NULL, 0, 0, WINDOW_WIDTH, 
WINDOW_HEIGHT);
+               break;
+       default:
+               break;
+       }
+}
+
+static void
+handle_key(void *data, struct wl_input_device *input_device,
+                 uint32_t time, uint32_t key, uint32_t state)
+{
+       struct input *input = data;
+       struct window *window = input->keyboard_focus;
+       struct display *d = input->display;
+       uint32_t code, sym, level;
+
+       code = key + d->xkb->min_key_code;
+       if (!window)
+               return;
+
+       level = 0;
+       if (input->modifiers & XKB_COMMON_SHIFT_MASK &&
+           XkbKeyGroupWidth(d->xkb, code, 0) > 1)
+               level = 1;
+
+       sym = XkbKeySymEntry(d->xkb, code, level, 0);
+
+       if (state)
+               input->modifiers |= d->xkb->map->modmap[code];
+       else
+               input->modifiers &= ~d->xkb->map->modmap[code];
+
+  key_handler(input, time, key, sym, state);
+}
+
+static void
+handle_keyboard_focus(void *data,
+                            struct wl_input_device *input_device,
+                            uint32_t time,
+                            struct wl_surface *surface,
+                            struct wl_array *keys)
+{
+       struct input *input = data;
+       struct display *d = input->display;
+       uint32_t *k, *end;
+
+       if (surface)
+               input->keyboard_focus = wl_surface_get_user_data(surface);
+       else
+               input->keyboard_focus = NULL;
+
+       end = keys->data + keys->size;
+       input->modifiers = 0;
+       for (k = keys->data; k < end; k++)
+               input->modifiers |= d->xkb->map->modmap[*k];
+}
+
+static void
+fake_handle_motion(void *data, struct wl_input_device *input_device,
+                    uint32_t time,
+                    int32_t x, int32_t y, int32_t sx, int32_t sy)
+{
+       printf ("%s: fake function\n", __FUNCTION__);
+}
+
+static void
+fake_handle_button(void *data,
+                    struct wl_input_device *input_device,
+                    uint32_t time, uint32_t button, uint32_t state)
+{
+       printf ("%s: fake function\n", __FUNCTION__);
+}
+
+static void
+fake_handle_pointer_focus(void *data,
+                           struct wl_input_device *input_device,
+                           uint32_t time, struct wl_surface *surface,
+                           int32_t x, int32_t y, int32_t sx, int32_t sy)
+{
+       printf ("%s: fake function\n", __FUNCTION__);
+}
+
+static const struct wl_input_device_listener input_device_listener = {
+       fake_handle_motion,
+       fake_handle_button,
+       handle_key,
+       fake_handle_pointer_focus,
+       handle_keyboard_focus,
+};
+
+
+static void
+display_add_input(struct display *d, uint32_t id)
+{
+       struct input *input;
+
+       input = malloc(sizeof *input);
+       if (input == NULL)
+               return;
+
+       memset(input, 0, sizeof *input);
+       input->display = d;
+       input->input_device =
+               wl_display_bind(d->display, id, &wl_input_device_interface);
+
+       wl_input_device_add_listener(input->input_device,
+                                    &input_device_listener, input);
+       wl_input_device_set_user_data(input->input_device, input);
+}
+
+static void
+display_handle_global(struct wl_display *display, uint32_t id,
+                     const char *interface, uint32_t version, void *data)
+{
+       struct display *d = data;
+
+       if (strcmp(interface, "wl_compositor") == 0) {
+               d->compositor =
+                       wl_display_bind(display, id, &wl_compositor_interface);
+       } else if (strcmp(interface, "wl_input_device") == 0) {
+               display_add_input(d, id);
+       } else if (strcmp(interface, "wl_shell") == 0) {
+               d->shell = wl_display_bind(display, id, &wl_shell_interface);
+       } else if (strcmp(interface, "wl_output") == 0) {
+               d->output = wl_display_bind(display, id, &wl_output_interface);
+       }
+}
+
+static int
+event_mask_update(uint32_t mask, void *data)
+{
+       struct display *d = data;
+
+       d->mask = mask;
+
+       return 0;
+}
+
+const char *option_xkb_layout = "us";
+const char *option_xkb_variant = "";
+const char *option_xkb_options = "";
+
+static const GOptionEntry xkb_option_entries[] = {
+       { "xkb-layout", 0, 0, G_OPTION_ARG_STRING,
+         &option_xkb_layout, "XKB Layout" },
+       { "xkb-variant", 0, 0, G_OPTION_ARG_STRING,
+         &option_xkb_variant, "XKB Variant" },
+       { "xkb-options", 0, 0, G_OPTION_ARG_STRING,
+         &option_xkb_options, "XKB Options" },
+       { NULL }
+};
+
+
+
+static void
+init_xkb(struct display *d)
+{
+       struct xkb_rule_names names;
+
+       names.rules = "evdev";
+       names.model = "pc105";
+       names.layout = option_xkb_layout;
+       names.variant = option_xkb_variant;
+       names.options = option_xkb_options;
+
+       d->xkb = xkb_compile_keymap_from_rules(&names);
+       if (!d->xkb) {
+               fprintf(stderr, "Failed to compile keymap\n");
+               exit(1);
+       }
+}
+
+static int running = 1;
+
+static void
+signal_int(int signum)
+{
+       running = 0;
+}
+
+static void
+fini_egl(struct display *display)
+{
+       /* Required, otherwise segfault in egl_dri2.c: dri2_make_current()
+        * on eglReleaseThread(). */
+       eglMakeCurrent(display->egl.dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
+                      EGL_NO_CONTEXT);
+
+       eglTerminate(display->egl.dpy);
+       eglReleaseThread();
+}
+
+int
+main(int argc, char **argv)
+{
+       struct sigaction sigint;
+       struct display display = { 0 };
+       struct window  window  = { 0 };
+
+       memset(&display, 0, sizeof display);
+       memset(&window,  0, sizeof window);
+
+       window.display = &display;
+       window.geometry.width  = WINDOW_WIDTH;
+       window.geometry.height = WINDOW_HEIGHT;
+
+       init_xkb(&display);
+       display.display = wl_display_connect(NULL);
+       assert(display.display);
+
+       wl_display_add_global_listener(display.display,
+                                      display_handle_global, &display);
+
+       wl_display_get_fd(display.display, event_mask_update, &display);
+       wl_display_iterate(display.display, WL_DISPLAY_READABLE);
+
+       init_egl(&display);
+       create_surface(&window);
+       init_gl(&window);
+
+       redraw(&window, NULL, 0);
+
+       sigint.sa_handler = signal_int;
+       sigemptyset(&sigint.sa_mask);
+       sigint.sa_flags = SA_RESETHAND;
+       sigaction(SIGINT, &sigint, NULL);
+
+       while (running)
+               wl_display_iterate(display.display, display.mask);
+
+       fprintf(stderr, "simple-rect exiting\n");
+
+       destroy_surface(&window);
+       fini_egl(&display);
+
+       if (display.shell)
+               wl_shell_destroy(display.shell);
+
+       if (display.compositor)
+               wl_compositor_destroy(display.compositor);
+
+       wl_display_flush(display.display);
+       wl_display_destroy(display.display);
+
+       return 0;
+}
-- 
1.7.5.4

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