Add a simple PDF viewer
This commit is contained in:
Kristian Høgsberg
parent
7d7b5dbf4d
commit
8f2f773846
@ -6,7 +6,7 @@ udev_rules_dir = @sysconfdir@/udev/rules.d
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libs = libwayland-server.so libwayland.so
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egl_clients = gears
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cairo_clients = flower screenshot terminal image
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cairo_clients = flower screenshot terminal image view
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compositors = wayland-system-compositor
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all : $(libs) $(compositors) $(egl_clients) $(cairo_clients)
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@ -43,10 +43,13 @@ gears : gears.o window.o wayland-glib.o cairo-util.o
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screenshot : screenshot.o wayland-glib.o
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terminal : terminal.o window.o wayland-glib.o cairo-util.o
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image : image.o window.o wayland-glib.o cairo-util.o
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view : view.o window.o wayland-glib.o cairo-util.o
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terminal : LDLIBS += -lutil
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image : CFLAGS += @GDK_PIXBUF_CFLAGS@
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image : LDLIBS += @GDK_PIXBUF_LIBS@
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view : CFLAGS += @POPPLER_CFLAGS@
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view : LDLIBS += @POPPLER_LIBS@
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$(egl_clients) : CFLAGS += @EGL_CLIENT_CFLAGS@
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$(egl_clients) : LDLIBS += -L. -lwayland @EGL_CLIENT_LIBS@ -lrt
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@ -9,6 +9,7 @@ PKG_CHECK_MODULES(EGL_COMPOSITOR,
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PKG_CHECK_MODULES(EGL_CLIENT, [eagle cairo glib-2.0 libudev])
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PKG_CHECK_MODULES(CAIRO_CLIENT, [cairo-drm glib-2.0])
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PKG_CHECK_MODULES(GDK_PIXBUF, [gdk-pixbuf-2.0])
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PKG_CHECK_MODULES(POPPLER, [poppler-glib gdk-2.0])
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if test $CC = gcc; then
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GCC_CFLAGS="-Wall -g -Wstrict-prototypes -Wmissing-prototypes -fvisibility=hidden"
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313
view.c
Normal file
313
view.c
Normal file
@ -0,0 +1,313 @@
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/*
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* Copyright © 2008 Kristian Høgsberg
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* Copyright © 2009 Chris Wilson
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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 <cairo-drm.h>
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#include <glib.h>
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#include <linux/input.h>
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#include <glib/poppler-document.h>
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#include <glib/poppler-page.h>
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#include "wayland-util.h"
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#include "wayland-client.h"
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#include "wayland-glib.h"
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#include "window.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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struct view {
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struct window *window;
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struct display *display;
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struct wl_compositor *compositor;
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uint32_t key;
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gboolean redraw_scheduled;
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gboolean redraw_pending;
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cairo_surface_t *surface;
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gchar *filename;
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PopplerDocument *document;
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int page;
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int fullscreen;
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int focused;
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};
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static void
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view_draw(struct view *view)
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{
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struct rectangle rectangle;
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cairo_t *cr;
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PopplerPage *page;
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double width, height, doc_aspect, window_aspect, scale;
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view->redraw_pending = 0;
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window_draw(view->window);
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window_get_child_rectangle(view->window, &rectangle);
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page = poppler_document_get_page(view->document, view->page);
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view->surface =
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window_create_surface(view->window, &rectangle);
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cr = cairo_create(view->surface);
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cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_paint(cr);
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poppler_page_get_size(page, &width, &height);
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doc_aspect = width / height;
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window_aspect = (double) rectangle.width / rectangle.height;
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if (doc_aspect < window_aspect)
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scale = rectangle.height / height;
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else
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scale = rectangle.width / width;
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cairo_scale(cr, scale, scale);
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cairo_translate(cr,
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(rectangle.width - width * scale) / 2 / scale,
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(rectangle.height - height * scale) / 2 / scale);
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cairo_rectangle(cr, 0, 0, width, height);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_set_source_rgb(cr, 1, 1, 1);
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cairo_fill(cr);
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poppler_page_render(page, cr);
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cairo_destroy(cr);
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g_object_unref(G_OBJECT(page));
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window_copy_surface(view->window,
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&rectangle,
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view->surface);
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wl_compositor_commit(view->compositor, view->key);
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}
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static gboolean
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view_idle_redraw(void *data)
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{
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struct view *view = data;
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view_draw(view);
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return FALSE;
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}
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static void
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view_schedule_redraw(struct view *view)
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{
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if (!view->redraw_scheduled) {
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view->redraw_scheduled = 1;
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g_idle_add(view_idle_redraw, view);
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} else {
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view->redraw_pending = 1;
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}
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}
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static void
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key_handler(struct window *window, uint32_t key, uint32_t unicode,
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uint32_t state, uint32_t modifiers, void *data)
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{
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struct view *view = data;
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switch (key) {
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case KEY_F11:
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if (!state)
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break;
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view->fullscreen ^= 1;
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window_set_fullscreen(window, view->fullscreen);
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view_schedule_redraw(view);
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break;
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case KEY_SPACE:
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case KEY_PAGEDOWN:
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if (!state)
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break;
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view->page++;
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view_schedule_redraw(view);
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break;
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case KEY_BACKSPACE:
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case KEY_PAGEUP:
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if (!state)
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break;
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view->page--;
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view_schedule_redraw(view);
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break;
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default:
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break;
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}
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}
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static void
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resize_handler(struct window *window, void *data)
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{
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struct view *view = data;
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view_schedule_redraw(view);
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}
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static void
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handle_acknowledge(void *data,
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struct wl_compositor *compositor,
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uint32_t key, uint32_t frame)
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{
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struct view *view = data;
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if (view->key != key)
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return;
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cairo_surface_destroy(view->surface);
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view->redraw_scheduled = 0;
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if (view->redraw_pending) {
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view->redraw_pending = 0;
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view_schedule_redraw(view);
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}
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}
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static void
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keyboard_focus_handler(struct window *window,
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struct wl_input_device *device, void *data)
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{
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struct view *view = data;
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view->focused = (device != NULL);
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view_schedule_redraw(view);
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}
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static void
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handle_frame(void *data,
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struct wl_compositor *compositor,
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uint32_t frame, uint32_t timestamp)
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{
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}
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static const struct wl_compositor_listener compositor_listener = {
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handle_acknowledge,
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handle_frame,
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};
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static struct view *
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view_create(struct display *display, uint32_t key, const char *filename)
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{
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struct view *view;
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gchar *basename;
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gchar *title;
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GError *error = NULL;
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view = malloc(sizeof *view);
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if (view == NULL)
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return view;
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memset(view, 0, sizeof *view);
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basename = g_path_get_basename(filename);
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title = g_strdup_printf("Wayland View - %s", basename);
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g_free(basename);
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view->filename = g_strdup(filename);
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view->window = window_create(display, title,
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100 * key, 100 * key, 500, 400);
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view->display = display;
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/* FIXME: Window uses key 1 for moves, need some kind of
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* allocation scheme here. Or maybe just a real toolkit. */
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view->key = key + 100;
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view->redraw_scheduled = 1;
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view->compositor = display_get_compositor(display);
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window_set_resize_handler(view->window, resize_handler, view);
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window_set_key_handler(view->window, key_handler, view);
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window_set_keyboard_focus_handler(view->window,
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keyboard_focus_handler, view);
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wl_compositor_add_listener(view->compositor,
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&compositor_listener, view);
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view->document = poppler_document_new_from_file(view->filename,
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NULL, &error);
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view->page = 0;
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view_draw(view);
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return view;
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}
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static const GOptionEntry option_entries[] = {
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{ NULL }
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};
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int
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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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GMainLoop *loop;
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GSource *source;
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struct display *d;
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GOptionContext *context;
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GError *error = NULL;
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int i;
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context = g_option_context_new(NULL);
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g_option_context_add_main_entries(context, option_entries, "Wayland View");
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if (!g_option_context_parse(context, &argc, &argv, &error)) {
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fprintf(stderr, "option parsing failed: %s\n", error->message);
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exit(EXIT_FAILURE);
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}
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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, sizeof 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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d = display_create(display, fd);
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loop = g_main_loop_new(NULL, FALSE);
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source = wl_glib_source_new(display);
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g_source_attach(source, NULL);
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g_type_init ();
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for (i = 1; i < argc; i++) {
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struct view *view;
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view = view_create (d, i, argv[i]);
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}
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g_main_loop_run(loop);
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return 0;
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}
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