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Issue 7457023: Adding a Wayland basic toolkit (Closed) Base URL: http://git.chromium.org/git/chromium.git@trunk
Patch Set: Removed the WaylandDisplay singleton Created 9 years, 5 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ui/wayland/wayland_cursor.h"
6
7 #include <cairo.h>
8
9 #include "base/logging.h"
10 #include "ui/wayland/wayland_display.h"
11 #include "ui/wayland/wayland_shm_buffer.h"
12
13 namespace {
14
15 struct PointerImage {
16 const char* filename;
17 int hotspot_x, hotspot_y;
18 };
19
20 // TODO(dnicoara) Add more pointer images and fix the path
21 static const struct PointerImage kPointerImages[] = {
22 {"left_ptr.png", 10, 5},
23 {"hand.png", 10, 5},
24 };
25
26 }
Evan Martin 2011/07/22 21:08:54 Write this one as } // namespace (which conveys
27
28 WaylandCursor::WaylandCursor(WaylandDisplay* display)
29 : display_(display),
30 buffer_(NULL) {
31 }
32
33 WaylandCursor::~WaylandCursor() {
34 if (buffer_) {
35 delete buffer_;
36 buffer_ = NULL;
37 }
38 }
39
40 void WaylandCursor::ChangeCursor(WaylandCursorType type) {
41 const struct PointerImage *ptr = &kPointerImages[type];
42
43 cairo_surface_t* ptr_surface = cairo_image_surface_create_from_png(
44 ptr->filename);
45
46 if (!ptr_surface) {
47 LOG(ERROR) << "Failed to create cursor surface";
48 return;
49 }
50
51 int width = cairo_image_surface_get_width(ptr_surface);
52 int height = cairo_image_surface_get_height(ptr_surface);
53
54 if (buffer_) {
55 delete buffer_;
56 buffer_ = NULL;
57 }
58
59 // TODO(dnicoara) There should be a simpler way to create a wl_buffer for
60 // a cairo surface. Meantime we just copy the contents of the cairo surface
61 // created from file to the cairo surface created using a shm file.
62 buffer_ = new WaylandShmBuffer(display_, width, height);
63 cairo_surface_t* shared_surface = buffer_->GetDataSurface();
64
65 cairo_t* cr = cairo_create(shared_surface);
66 cairo_set_source_surface(cr, ptr_surface, 0, 0);
67 cairo_rectangle(cr, 0, 0, width, height);
68 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
69 cairo_fill(cr);
70
71 display_->SetCursor(buffer_, ptr->hotspot_x, ptr->hotspot_y);
72 }
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