Attachment 385965 Details for Bug 557317 – standalone demo

standalone demo

grayborder.c (text/plain), 3.06 KB, created by Caolan McNamara on 2010-01-21 17:04:39 UTC

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Creator: Caolan McNamara

Created: 2010-01-21 17:04:39 UTC

Size: 3.06 KB

patch

obsolete

>/*gcc grayborder.c `pkg-config --cflags --libs cairo-xlib`*/
>
>#define WIDTH 250
>#define HEIGHT 40
>
>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>#include <math.h>
>
>#include <cairo.h>
>#include <cairo-xlib.h>
>#include <cairo-xlib-xrender.h>
>
>typedef struct win {
>    Display *dpy;
>    int scr;
>
>    Window win;
>    GC gc;
>
>    int width, height;
>    KeyCode quit_code;
>} win_t;
>
>static void win_init(win_t *win);
>static void win_deinit(win_t *win);
>static void win_draw(win_t *win);
>static void win_handle_events(win_t *win);
>
>int
>main(int argc, char *argv[])
>{
>    win_t win;
>
>    win.dpy = XOpenDisplay(0);
>
>    if (win.dpy == NULL) {
>	fprintf(stderr, "Failed to open display\n");
>	return 1;
>    }
>
>    win_init(&win);
>
>    win_draw(&win);
>
>    win_handle_events(&win);
>
>    win_deinit(&win);
>
>    XCloseDisplay(win.dpy);
>
>    return 0;
>}
>
>static void
>win_draw(win_t *win)
>{
>    cairo_surface_t *surface;
>    cairo_surface_t* source;
>    cairo_t *cr;
>    unsigned char *data;
>    int nWidth = WIDTH, nHeight = HEIGHT;
>    cairo_matrix_t matx;
>    Visual *visual = DefaultVisual(win->dpy, DefaultScreen (win->dpy));
>
>    data = (unsigned char*) malloc( nWidth*nHeight*4 );
>    memset(data, 0xFF, nWidth*nHeight*4);
>    source = cairo_image_surface_create_for_data(
>                            data,
>                            CAIRO_FORMAT_RGB24,
>                            nWidth, nHeight, nWidth*4 );
>
>    XClearWindow(win->dpy, win->win);
>
>    surface = cairo_xlib_surface_create(win->dpy,
>        win->win, visual, 
>        500, 300);
>
>    cr = cairo_create(surface);
>
>    //Scale by 1.5 x 1.5
>    cairo_matrix_init (&matx,
>    	1.5, 0.0, 0.0, 1.5, 50.0, 50.0);
>    cairo_set_matrix( cr, &matx);
>
>    cairo_set_source_surface( cr, source, 0, 0 );
>    cairo_rectangle( cr, 0, 0, nWidth, nHeight );
>    cairo_clip( cr );
>    cairo_paint( cr );
>
>    cairo_destroy(cr);
>    cairo_surface_destroy (surface);
>    cairo_surface_destroy (source);
>
>    free (data);
>}
>
>static void
>win_init(win_t *win)
>{
>    Window root;
>
>    win->width = 500;
>    win->height = 300;
>
>    root = DefaultRootWindow(win->dpy);
>    win->scr = DefaultScreen(win->dpy);
>
>    win->win = XCreateSimpleWindow(win->dpy, root, 0, 0,
>				   win->width, win->height, 0,
>				   BlackPixel(win->dpy, win->scr), WhitePixel(win->dpy, win->scr));
>
>    win->quit_code = XKeysymToKeycode(win->dpy, XStringToKeysym("Q"));
>
>    XSelectInput(win->dpy, win->win,
>		 KeyPressMask
>		 |StructureNotifyMask
>		 |ExposureMask);
>
>    XMapWindow(win->dpy, win->win);
>}
>
>static void
>win_deinit(win_t *win)
>{
>    XDestroyWindow(win->dpy, win->win);
>}
>
>static void
>win_handle_events(win_t *win)
>{
>    XEvent xev;
>
>    while (1) {
>	XNextEvent(win->dpy, &xev);
>	switch(xev.type) {
>	case KeyPress:
>	{
>	    XKeyEvent *kev = &xev.xkey;
>	    
>	    if (kev->keycode == win->quit_code) {
>		return;
>	    }
>	}
>	break;
>	case ConfigureNotify:
>	{
>	    XConfigureEvent *cev = &xev.xconfigure;
>
>	    win->width = cev->width;
>	    win->height = cev->height;
>	}
>	break;
>	case Expose:
>	{
>	    XExposeEvent *eev = &xev.xexpose;
>
>	    if (eev->count == 0)
>		win_draw(win);
>	}
>	break;
>	}
>    }
>}

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Attachments on bug 557317: 385820 | 385821 | 385822 | 385965 | 398009 | 398012 | 398013 | 398014 | 398016 | 398017 | 438547