439 lines
13 KiB
C
439 lines
13 KiB
C
/*
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* Copyright © 2008 Kristian Høgsberg
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <math.h>
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#include <time.h>
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#include <cairo.h>
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#include <glib.h>
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#include <GL/gl.h>
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#include <eagle.h>
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#include "wayland-client.h"
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#include "wayland-glib.h"
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#include "gears.h"
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#include "cairo-util.h"
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static const char gem_device[] = "/dev/dri/card0";
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static const char socket_name[] = "\0wayland";
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static void die(const char *msg)
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{
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fprintf(stderr, "%s", msg);
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exit(EXIT_FAILURE);
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}
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struct window {
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struct wl_display *display;
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struct wl_surface *surface;
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int x, y, width, height;
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int margin;
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int drag_x, drag_y, last_x, last_y;
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int state;
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uint32_t name;
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int fd;
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int resized;
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cairo_pattern_t *background;
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struct buffer *buffer;
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struct buffer *egl_buffer;
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GLfloat gears_angle;
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struct gears *gears;
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EGLDisplay egl_display;
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EGLContext context;
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EGLConfig config;
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EGLSurface egl_surface;
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};
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static void
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rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius)
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{
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cairo_move_to(cr, x0, y0 + radius);
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cairo_arc(cr, x0 + radius, y0 + radius, radius, M_PI, 3 * M_PI / 2);
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cairo_line_to(cr, x1 - radius, y0);
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cairo_arc(cr, x1 - radius, y0 + radius, radius, 3 * M_PI / 2, 2 * M_PI);
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cairo_line_to(cr, x1, y1 - radius);
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cairo_arc(cr, x1 - radius, y1 - radius, radius, 0, M_PI / 2);
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cairo_line_to(cr, x0 + radius, y1);
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cairo_arc(cr, x0 + radius, y1 - radius, radius, M_PI / 2, M_PI);
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cairo_close_path(cr);
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}
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static gboolean
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draw_window(void *data)
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{
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struct window *window = data;
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cairo_surface_t *surface;
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cairo_t *cr;
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int border = 2, radius = 5;
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cairo_text_extents_t extents;
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cairo_pattern_t *gradient, *outline, *bright, *dim;
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const static char title[] = "Wayland First Post";
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struct buffer *buffer;
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int width, height;
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surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24,
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window->width + window->margin * 2,
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window->height + window->margin * 2);
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outline = cairo_pattern_create_rgb(0.1, 0.1, 0.1);
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bright = cairo_pattern_create_rgb(0.8, 0.8, 0.8);
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dim = cairo_pattern_create_rgb(0.4, 0.4, 0.4);
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cr = cairo_create(surface);
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cairo_translate(cr, window->margin + 7, window->margin + 5);
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cairo_set_line_width (cr, border);
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cairo_set_source_rgba(cr, 0, 0, 0, 0.7);
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rounded_rect(cr, 0, 0, window->width, window->height, radius);
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cairo_fill(cr);
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blur_surface(surface, 24 + radius);
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cairo_translate(cr, -7, -5);
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cairo_set_line_width (cr, border);
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rounded_rect(cr, 1, 1, window->width - 1, window->height - 1, radius);
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cairo_set_source(cr, outline);
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cairo_stroke(cr);
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rounded_rect(cr, 2, 2, window->width - 2, window->height - 2, radius - 1);
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cairo_set_source(cr, bright);
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cairo_stroke(cr);
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rounded_rect(cr, 3, 3, window->width - 2, window->height - 2, radius - 1);
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cairo_set_source(cr, dim);
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cairo_stroke(cr);
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rounded_rect(cr, 2, 2, window->width - 2, window->height - 2, radius - 1);
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gradient = cairo_pattern_create_linear (0, 0, 0, 100);
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cairo_pattern_add_color_stop_rgb(gradient, 0, 0.6, 0.6, 0.4);
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cairo_pattern_add_color_stop_rgb(gradient, 1, 0.8, 0.8, 0.7);
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cairo_set_source(cr, gradient);
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cairo_fill(cr);
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cairo_pattern_destroy(gradient);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_move_to(cr, 10, 50);
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cairo_line_to(cr, window->width - 10, 50);
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cairo_line_to(cr, window->width - 10, window->height - 10);
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cairo_line_to(cr, 10, window->height - 10);
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cairo_close_path(cr);
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cairo_set_source(cr, dim);
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cairo_stroke(cr);
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cairo_move_to(cr, 11, 51);
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cairo_line_to(cr, window->width - 10, 51);
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cairo_line_to(cr, window->width - 10, window->height - 10);
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cairo_line_to(cr, 11, window->height - 10);
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cairo_close_path(cr);
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cairo_set_source(cr, bright);
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cairo_stroke(cr);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_set_font_size(cr, 14);
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cairo_text_extents(cr, title, &extents);
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cairo_move_to(cr, (window->width - extents.width) / 2, 10 - extents.y_bearing);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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cairo_set_line_width (cr, 4);
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cairo_text_path(cr, title);
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cairo_set_source_rgb(cr, 0.1, 0.1, 0.1);
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cairo_stroke_preserve(cr);
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cairo_set_source_rgb(cr, 1, 1, 1);
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cairo_fill(cr);
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cairo_destroy(cr);
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window->buffer = buffer_create_from_cairo_surface(window->fd, surface);
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cairo_surface_destroy(surface);
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wl_surface_attach(window->surface,
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window->buffer->name,
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window->buffer->width,
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window->buffer->height,
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window->buffer->stride);
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wl_surface_map(window->surface,
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window->x - window->margin,
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window->y - window->margin,
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window->width + 2 * window->margin,
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window->height + 2 * window->margin);
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width = window->width - 20;
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height = window->height - 60;
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buffer = buffer_create(window->fd, width, height, (width * 4 + 15) & ~15);
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window->egl_buffer = buffer;
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window->egl_surface = eglCreateSurfaceForName(window->egl_display,
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window->config, buffer->name,
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buffer->width, buffer->height,
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buffer->stride, NULL);
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if (!eglMakeCurrent(window->egl_display,
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window->egl_surface, window->egl_surface, window->context))
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die("failed to make context current\n");
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glViewport(0, 0, width, height);
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window->resized = 0;
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return FALSE;
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}
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enum window_state {
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WINDOW_STABLE,
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WINDOW_MOVING,
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WINDOW_RESIZING_UPPER_LEFT,
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WINDOW_RESIZING_UPPER_RIGHT,
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WINDOW_RESIZING_LOWER_LEFT,
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WINDOW_RESIZING_LOWER_RIGHT
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};
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enum location {
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LOCATION_INTERIOR,
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LOCATION_UPPER_LEFT,
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LOCATION_UPPER_RIGHT,
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LOCATION_LOWER_LEFT,
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LOCATION_LOWER_RIGHT,
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LOCATION_OUTSIDE
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};
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static int
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update_gears(void *data)
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{
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struct window *window = data;
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if (window->resized)
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draw_window(window);
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gears_draw(window->gears, window->gears_angle);
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return FALSE;
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}
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static void
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event_handler(struct wl_display *display,
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uint32_t object, uint32_t opcode,
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uint32_t size, uint32_t *p, void *data)
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{
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struct window *window = data;
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struct buffer *buffer;
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int location;
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int grip_size = 16;
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/* FIXME: Object ID 1 is the display, for anything else we
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* assume it's an input device. */
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if (object == 1 && opcode == 3) {
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uint32_t key = p[0];
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/* Ignore acknowledge events for window move requests. */
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if (key != 0)
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return;
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/* The acknowledge event means that the server
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* processed our last commit request and we can now
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* safely free the old window buffer if we resized and
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* render the next frame into our back buffer.. */
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if (window->buffer != NULL) {
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buffer_destroy(window->buffer, window->fd);
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window->buffer = NULL;
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}
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g_idle_add(update_gears, window);
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} else if (object == 1 && opcode == 4) {
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/* The frame event means that the previous frame was
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* composited, and we can now send the request to copy
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* the frame we've rendered in the mean time into the
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* servers surface buffer. */
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buffer = window->egl_buffer;
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wl_surface_copy(window->surface,
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10 + window->margin, 50 + window->margin,
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buffer->name, buffer->stride,
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0, 0, buffer->width, buffer->height);
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wl_display_commit(window->display, 0);
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window->gears_angle += 1;
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} else if (object == 1) {
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fprintf(stderr, "unexpected event from display: %d\n",
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opcode);
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exit(-1);
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} else if (opcode == 0) {
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int x = p[0], y = p[1];
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window->last_x = x;
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window->last_y = y;
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switch (window->state) {
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case WINDOW_MOVING:
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window->x = window->drag_x + x;
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window->y = window->drag_y + y;
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wl_surface_map(window->surface,
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window->x - window->margin,
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window->y - window->margin,
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window->width + 2 * window->margin,
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window->height + 2 * window->margin);
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wl_display_commit(window->display, 1);
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break;
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case WINDOW_RESIZING_LOWER_RIGHT:
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window->width = window->drag_x + x;
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window->height = window->drag_y + y;
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if (window->width < 400)
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window->width = 400;
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if (window->height < 400)
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window->height = 400;
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/* Right now, resizing the window from the
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* per-frame callback is fine, since the
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* window drawing code is so slow that we
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* can't draw more than one window per frame
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* anyway. However, once we implement faster
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* resizing, this will show lag between
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* pointer motion and window size even if
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* resizing is fast. We need to keep
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* processing motion events and posting new
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* frames as fast as possible so when the
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* server composites the next frame it will
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* have the most recent size possible, like
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* what we do for window moves. */
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window->resized = 1;
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break;
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}
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} else if (opcode == 1) {
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int button = p[0], state = p[1];
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if (window->x + window->width - grip_size <= window->last_x &&
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window->last_x < window->x + window->width &&
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window->y + window->height - grip_size <= window->last_y &&
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window->last_y < window->y + window->height) {
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location = LOCATION_LOWER_RIGHT;
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} else if (window->x <= window->last_x &&
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window->last_x < window->x + window->width &&
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window->y <= window->last_y &&
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window->last_y < window->y + window->height) {
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location = LOCATION_INTERIOR;
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} else {
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location = LOCATION_OUTSIDE;
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}
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if (button == 0 && state == 1) {
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switch (location) {
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case LOCATION_INTERIOR:
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window->drag_x = window->x - window->last_x;
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window->drag_y = window->y - window->last_y;
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window->state = WINDOW_MOVING;
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break;
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case LOCATION_LOWER_RIGHT:
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window->drag_x = window->width - window->last_x;
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window->drag_y = window->height - window->last_y;
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window->state = WINDOW_RESIZING_LOWER_RIGHT;
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break;
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default:
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window->state = WINDOW_STABLE;
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break;
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}
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} else if (button == 0 && state == 0) {
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window->state = WINDOW_STABLE;
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}
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}
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}
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static struct window *
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window_create(struct wl_display *display, int fd)
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{
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EGLint major, minor, count;
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EGLConfig configs[64];
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struct window *window;
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const GLfloat red = 0, green = 0, blue = 0, alpha = 0.92;
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window = malloc(sizeof *window);
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if (window == NULL)
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return NULL;
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memset(window, 0, sizeof *window);
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window->display = display;
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window->surface = wl_display_create_surface(display);
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window->x = 200;
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window->y = 200;
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window->width = 450;
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window->height = 500;
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window->margin = 16;
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window->state = WINDOW_STABLE;
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window->fd = fd;
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window->background = cairo_pattern_create_rgba (red, green, blue, alpha);
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window->egl_display = eglCreateDisplayNative("/dev/dri/card0", "i965");
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if (window->egl_display == NULL)
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die("failed to create egl display\n");
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if (!eglInitialize(window->egl_display, &major, &minor))
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die("failed to initialize display\n");
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if (!eglGetConfigs(window->egl_display, configs, 64, &count))
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die("failed to get configs\n");
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window->config = configs[24];
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window->context = eglCreateContext(window->egl_display, window->config, NULL, NULL);
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if (window->context == NULL)
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die("failed to create context\n");
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draw_window(window);
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window->gears = gears_create(0, 0, 0, 0.92);
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gears_draw(window->gears, window->gears_angle);
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window->gears_angle += 1;
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wl_display_commit(window->display, 0);
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return window;
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}
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int main(int argc, char *argv[])
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{
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struct wl_display *display;
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int fd;
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struct window *window;
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GMainLoop *loop;
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GSource *source;
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fd = open(gem_device, O_RDWR);
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if (fd < 0) {
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fprintf(stderr, "drm open failed: %m\n");
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return -1;
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}
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display = wl_display_create(socket_name);
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if (display == NULL) {
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fprintf(stderr, "failed to create display: %m\n");
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return -1;
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}
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loop = g_main_loop_new(NULL, FALSE);
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source = wayland_source_new(display);
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g_source_attach(source, NULL);
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window = window_create(display, fd);
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wl_display_set_event_handler(display, event_handler, window);
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g_main_loop_run(loop);
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return 0;
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}
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