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Add client side pointer image handling

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dev
Kristian Høgsberg 15 years ago
parent f4cb201392
commit da275dd09f
1 changed files with 203 additions and 22 deletions
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  1. 225
      clients/window.c

225
clients/window.c
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@ -31,6 +31,7 @@
#include <cairo.h>
#include <glib.h>
#include <glib-object.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <xf86drm.h>
#define EGL_EGLEXT_PROTOTYPES 1
@ -69,6 +70,8 @@ struct display {
char *device_name;
cairo_surface_t *active_frame, *inactive_frame, *shadow;
struct xkb_desc *xkb;
EGLImageKHR *pointer_images;
struct wl_buffer **pointer_buffers;
};
struct window {
@ -124,6 +127,100 @@ rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius)
cairo_close_path(cr);
}
static int
texture_from_png(const char *filename, int width, int height)
{
GdkPixbuf *pixbuf;
GError *error = NULL;
void *data;
GLenum format;
pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
width, height,
FALSE, &error);
if (error != NULL)
return -1;
data = gdk_pixbuf_get_pixels(pixbuf);
if (gdk_pixbuf_get_has_alpha(pixbuf))
format = GL_RGBA;
else
format = GL_RGB;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
width, height, 0, format, GL_UNSIGNED_BYTE, data);
gdk_pixbuf_unref(pixbuf);
return 0;
}
static const struct {
const char *filename;
int hotspot_x, hotspot_y;
} pointer_images[] = {
{ DATADIR "/wayland/bottom_left_corner.png", 6, 30 },
{ DATADIR "/wayland/bottom_right_corner.png", 28, 28 },
{ DATADIR "/wayland/bottom_side.png", 16, 20 },
{ DATADIR "/wayland/grabbing.png", 20, 17 },
{ DATADIR "/wayland/left_ptr.png", 10, 5 },
{ DATADIR "/wayland/left_side.png", 10, 20 },
{ DATADIR "/wayland/right_side.png", 30, 19 },
{ DATADIR "/wayland/top_left_corner.png", 8, 8 },
{ DATADIR "/wayland/top_right_corner.png", 26, 8 },
{ DATADIR "/wayland/top_side.png", 18, 8 },
{ DATADIR "/wayland/xterm.png", 15, 15 }
};
static void
create_pointer_images(struct display *d)
{
int i, count;
GLuint texture;
const int width = 32, height = 32;
EGLint name, stride;
struct wl_visual *visual;
EGLint image_attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
EGL_IMAGE_FORMAT_MESA, EGL_IMAGE_FORMAT_ARGB8888_MESA,
EGL_IMAGE_USE_MESA, EGL_IMAGE_USE_SCANOUT_MESA,
EGL_NONE
};
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
visual = wl_display_get_argb_visual(d->display);
image_attribs[1] = width;
image_attribs[3] = height;
count = ARRAY_LENGTH(pointer_images);
d->pointer_images = malloc(count * sizeof *d->pointer_images);
d->pointer_buffers = malloc(count * sizeof *d->pointer_buffers);
for (i = 0; i < count; i++) {
d->pointer_images[i] =
eglCreateDRMImageMESA(d->dpy, image_attribs);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,
d->pointer_images[i]);
eglExportDRMImageMESA(d->dpy,
d->pointer_images[i],
&name, NULL, &stride);
texture_from_png(pointer_images[i].filename, width, height);
d->pointer_buffers[i] =
wl_drm_create_buffer(d->drm, name,
width, height, stride, visual);
}
}
static const cairo_user_data_key_t surface_data_key;
struct surface_data {
EGLImageKHR image;
@ -315,6 +412,100 @@ enum window_state {
WINDOW_STABLE = 16,
};
enum pointer_type {
POINTER_BOTTOM_LEFT,
POINTER_BOTTOM_RIGHT,
POINTER_BOTTOM,
POINTER_DRAGGING,
POINTER_LEFT_PTR,
POINTER_LEFT,
POINTER_RIGHT,
POINTER_TOP_LEFT,
POINTER_TOP_RIGHT,
POINTER_TOP,
POINTER_IBEAM,
};
static int
get_pointer_location(struct window *window, int32_t x, int32_t y)
{
int vlocation, hlocation;
const int grip_size = 8;
if (x < window->margin)
hlocation = WINDOW_STABLE;
else if (window->margin <= x && x < window->margin + grip_size)
hlocation = WINDOW_RESIZING_LEFT;
else if (x < window->allocation.width - window->margin - grip_size)
hlocation = WINDOW_MOVING;
else if (x < window->allocation.width - window->margin)
hlocation = WINDOW_RESIZING_RIGHT;
else
hlocation = WINDOW_STABLE;
if (y < window->margin)
vlocation = WINDOW_STABLE;
else if (window->margin <= y && y < window->margin + grip_size)
vlocation = WINDOW_RESIZING_TOP;
else if (y < window->allocation.height - window->margin - grip_size)
vlocation = WINDOW_MOVING;
else if (y < window->allocation.height - window->margin)
vlocation = WINDOW_RESIZING_BOTTOM;
else
vlocation = WINDOW_STABLE;
return vlocation | hlocation;
}
static void
set_pointer_image(struct input *input)
{
struct display *display = input->display;
int pointer, location;
location = get_pointer_location(input->pointer_focus,
input->sx, input->sy);
switch (location) {
case WINDOW_RESIZING_TOP:
pointer = POINTER_TOP;
break;
case WINDOW_RESIZING_BOTTOM:
pointer = POINTER_BOTTOM;
break;
case WINDOW_RESIZING_LEFT:
pointer = POINTER_LEFT;
break;
case WINDOW_RESIZING_RIGHT:
pointer = POINTER_RIGHT;
break;
case WINDOW_RESIZING_TOP_LEFT:
pointer = POINTER_TOP_LEFT;
break;
case WINDOW_RESIZING_TOP_RIGHT:
pointer = POINTER_TOP_RIGHT;
break;
case WINDOW_RESIZING_BOTTOM_LEFT:
pointer = POINTER_BOTTOM_LEFT;
break;
case WINDOW_RESIZING_BOTTOM_RIGHT:
pointer = POINTER_BOTTOM_RIGHT;
break;
case WINDOW_STABLE:
wl_input_device_attach(input->input_device,
NULL, 0, 0);
return;
default:
/* FIXME: We should ask the application here. */
pointer = POINTER_IBEAM;
break;
}
wl_input_device_attach(input->input_device,
display->pointer_buffers[pointer],
pointer_images[pointer].hotspot_x,
pointer_images[pointer].hotspot_y);
}
static void
window_handle_motion(void *data, struct wl_input_device *input_device,
uint32_t time,
@ -326,6 +517,8 @@ window_handle_motion(void *data, struct wl_input_device *input_device,
input->y = y;
input->sx = sx;
input->sy = sy;
set_pointer_image(input);
}
static void window_handle_button(void *data, struct wl_input_device *input_device,
@ -333,28 +526,12 @@ static void window_handle_button(void *data, struct wl_input_device *input_devic
{
struct input *input = data;
struct window *window = input->pointer_focus;
int grip_size = 8, vlocation, hlocation;
int location;
if (window->margin <= input->sx && input->sx < window->margin + grip_size)
hlocation = WINDOW_RESIZING_LEFT;
else if (input->sx < window->allocation.width - window->margin - grip_size)
hlocation = WINDOW_MOVING;
else if (input->sx < window->allocation.width - window->margin)
hlocation = WINDOW_RESIZING_RIGHT;
else
hlocation = WINDOW_STABLE;
if (window->margin <= input->sy && input->sy < window->margin + grip_size)
vlocation = WINDOW_RESIZING_TOP;
else if (input->sy < window->allocation.height - window->margin - grip_size)
vlocation = WINDOW_MOVING;
else if (input->sy < window->allocation.height - window->margin)
vlocation = WINDOW_RESIZING_BOTTOM;
else
vlocation = WINDOW_STABLE;
location = get_pointer_location(window, input->sx, input->sy);
if (button == BTN_LEFT && state == 1) {
switch (hlocation | vlocation) {
switch (location) {
case WINDOW_MOVING:
wl_shell_move(window->display->shell,
window->surface, input_device, time);
@ -369,7 +546,7 @@ static void window_handle_button(void *data, struct wl_input_device *input_devic
case WINDOW_RESIZING_BOTTOM_RIGHT:
wl_shell_resize(window->display->shell,
window->surface, input_device, time,
hlocation | vlocation);
location);
break;
}
}
@ -413,10 +590,12 @@ window_handle_pointer_focus(void *data,
{
struct input *input = data;
if (surface)
if (surface) {
input->pointer_focus = wl_surface_get_user_data(surface);
else
set_pointer_image(input);
} else {
input->pointer_focus = NULL;
}
}
static void
@ -945,6 +1124,8 @@ display_create(int *argc, char **argv[], const GOptionEntry *option_entries)
return NULL;
}
create_pointer_images(d);
display_render_frame(d);
d->loop = g_main_loop_new(NULL, FALSE);

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