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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 "wayland_cursor.h" | |
6 | |
7 #include <cairo.h> | |
8 | |
9 #include "base/logging.h" | |
10 #include "wayland_display.h" | |
11 #include "wayland_shm_buffer.h" | |
12 | |
13 struct PointerImage { | |
Evan Martin
2011/07/22 18:21:22
Use an anon namespace around all the file-local de
| |
14 const char* filename; | |
15 int hotspot_x, hotspot_y; | |
16 }; | |
17 | |
18 /* TODO(dnicoara) Add more pointer images and fix the path */ | |
19 static const struct PointerImage pointer_images[] = { | |
Evan Martin
2011/07/22 18:21:22
kPointerImages
| |
20 {"left_ptr.png", 10, 5}, | |
21 {"hand.png", 10, 5}, | |
22 }; | |
23 | |
24 WaylandCursor::WaylandCursor(WaylandDisplay* display) | |
25 : display_(display), | |
26 buffer_(NULL) { | |
27 } | |
28 | |
29 WaylandCursor::~WaylandCursor() { | |
30 if (buffer_) { | |
31 delete buffer_; | |
32 buffer_ = NULL; | |
33 } | |
34 } | |
35 | |
36 void WaylandCursor::ChangeCursor(WaylandCursorType type) { | |
37 const struct PointerImage *ptr = &pointer_images[type]; | |
38 | |
39 cairo_surface_t* ptr_surface = cairo_image_surface_create_from_png( | |
40 ptr->filename); | |
41 | |
42 if (!ptr_surface) { | |
43 LOG(ERROR) << "Failed to create cursor surface"; | |
44 return; | |
45 } | |
46 | |
47 int width = cairo_image_surface_get_width(ptr_surface); | |
48 int height = cairo_image_surface_get_height(ptr_surface); | |
49 | |
50 if (buffer_) { | |
51 delete buffer_; | |
52 buffer_ = NULL; | |
53 } | |
54 | |
55 /* TODO(dnicoara) There should be a simpler way to create a wl_buffer for | |
56 a cairo surface. Meantime we just copy the contents of the cairo surface | |
57 created from file to the cairo surface created using a shm file. | |
58 */ | |
59 buffer_ = new WaylandShmBuffer(display_, width, height); | |
60 cairo_surface_t* shared_surface = buffer_->GetDataSurface(); | |
61 | |
62 cairo_t* cr = cairo_create(shared_surface); | |
63 cairo_set_source_surface(cr, ptr_surface, 0, 0); | |
64 cairo_rectangle(cr, 0, 0, width, height); | |
65 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); | |
66 cairo_fill(cr); | |
67 | |
68 display_->SetCursor(buffer_, ptr->hotspot_x, ptr->hotspot_y); | |
69 } | |
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