1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include <stdio.h>
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/cpp/graphics_2d.h"
#include "ppapi/cpp/image_data.h"
#include "ppapi/cpp/instance.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/size.h"
#include "ppapi/cpp/trusted/browser_font_trusted.h"
static void DummyCompletionCallback(void* /*user_data*/, int32_t /*result*/) {
}
class MyInstance : public pp::Instance {
public:
MyInstance(PP_Instance instance)
: pp::Instance(instance) {
}
virtual void DidChangeView(const pp::Rect& position, const pp::Rect& clip) {
if (position.size() == last_size_)
return;
last_size_ = position.size();
pp::ImageData image(this, PP_IMAGEDATAFORMAT_BGRA_PREMUL, last_size_, true);
pp::Graphics2D graphics(this, last_size_, false);
BindGraphics(graphics);
{
pp::BrowserFontDescription desc;
desc.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SANSSERIF);
desc.set_size(100);
pp::BrowserFont_Trusted font(this, desc);
// Draw some large, alpha blended text, including Arabic shaping.
pp::Rect text_clip(position.size()); // Use entire bounds for clip.
font.DrawTextAt(
&image,
pp::BrowserFontTextRun(
"\xD9\x85\xD8\xB1\xD8\xAD\xD8\xA8\xD8\xA7\xE2\x80\x8E", true,
true),
pp::Point(20, 100), 0x80008000, clip, false);
}
// Draw the default font names and sizes.
int y = 160;
{
pp::BrowserFontDescription desc;
pp::BrowserFont_Trusted default_font(this, desc);
default_font.DrawSimpleText(
&image, DescribeFont(default_font, "Default font"),
pp::Point(10, y), 0xFF000000);
y += 20;
}
{
pp::BrowserFontDescription desc;
desc.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SERIF);
pp::BrowserFont_Trusted serif_font(this, desc);
serif_font.DrawSimpleText(
&image, DescribeFont(serif_font, "Serif font"),
pp::Point(10, y), 0xFF000000);
y += 20;
}
{
pp::BrowserFontDescription desc;
desc.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SANSSERIF);
pp::BrowserFont_Trusted sans_serif_font(this, desc);
sans_serif_font.DrawSimpleText(
&image, DescribeFont(sans_serif_font, "Sans serif font"),
pp::Point(10, y), 0xFF000000);
y += 20;
}
{
pp::BrowserFontDescription desc;
desc.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_MONOSPACE);
pp::BrowserFont_Trusted monospace_font(this, desc);
monospace_font.DrawSimpleText(
&image, DescribeFont(monospace_font, "Monospace font"),
pp::Point(10, y), 0xFF000000);
y += 20;
}
graphics.PaintImageData(image, pp::Point(0, 0));
graphics.Flush(pp::CompletionCallback(&DummyCompletionCallback, NULL));
}
private:
// Returns a string describing the given font, using the given title.
std::string DescribeFont(const pp::BrowserFont_Trusted& font,
const char* title) {
pp::BrowserFontDescription desc;
PP_BrowserFont_Trusted_Metrics metrics;
font.Describe(&desc, &metrics);
char buf[256];
snprintf(buf, sizeof(buf), "%s = %s %dpt",
title, desc.face().AsString().c_str(), desc.size());
return std::string(buf);
}
pp::Size last_size_;
};
class MyModule : public pp::Module {
public:
virtual pp::Instance* CreateInstance(PP_Instance instance) {
return new MyInstance(instance);
}
};
namespace pp {
// Factory function for your specialization of the Module object.
Module* CreateModule() {
return new MyModule();
}
} // namespace pp
|
