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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "PrintTarget.h"
#include "cairo.h"
#ifdef CAIRO_HAS_QUARTZ_SURFACE
# include "cairo-quartz.h"
#endif
#ifdef CAIRO_HAS_WIN32_SURFACE
# include "cairo-win32.h"
#endif
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/HelpersCairo.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/StaticPrefs_gfx.h"
#include "nsReadableUtils.h"
#include "nsString.h"
#include "nsUTF8Utils.h"
// IPP spec disallow the job-name which is over 255 characters.
// RFC: https://tools.ietf.org/html/rfc2911#section-4.1.2
#define IPP_JOB_NAME_LIMIT_LENGTH 255
namespace mozilla::gfx {
PrintTarget::PrintTarget(cairo_surface_t* aCairoSurface, const IntSize& aSize)
: mCairoSurface(aCairoSurface),
mSize(aSize),
mIsFinished(false)
#ifdef DEBUG
,
mHasActivePage(false)
#endif
{
#if 0
// aCairoSurface is null when our PrintTargetThebes subclass's ctor calls us.
// Once PrintTargetThebes is removed, enable this assertion.
MOZ_ASSERT(aCairoSurface && !cairo_surface_status(aCairoSurface),
"CreateOrNull factory methods should not call us without a "
"valid cairo_surface_t*");
#endif
// CreateOrNull factory methods hand over ownership of aCairoSurface,
// so we don't call cairo_surface_reference(aSurface) here.
// This code was copied from gfxASurface::Init:
if (mCairoSurface &&
cairo_surface_get_content(mCairoSurface) != CAIRO_CONTENT_COLOR) {
cairo_surface_set_subpixel_antialiasing(
mCairoSurface, CAIRO_SUBPIXEL_ANTIALIASING_DISABLED);
}
}
PrintTarget::~PrintTarget() {
// null surfaces are allowed here
cairo_surface_destroy(mCairoSurface);
mCairoSurface = nullptr;
}
already_AddRefed<DrawTarget> PrintTarget::MakeDrawTarget(
const IntSize& aSize, DrawEventRecorder* aRecorder) {
MOZ_ASSERT(mCairoSurface,
"We shouldn't have been constructed without a cairo surface");
// This should not be called outside of BeginPage()/EndPage() calls since
// some backends can only provide a valid DrawTarget at that time.
MOZ_ASSERT(mHasActivePage, "We can't guarantee a valid DrawTarget");
if (cairo_surface_status(mCairoSurface)) {
return nullptr;
}
// Note than aSize may not be the same as mSize (the size of mCairoSurface).
// See the comments in our header. If the sizes are different a clip will
// be applied to mCairoSurface.
RefPtr<DrawTarget> dt =
Factory::CreateDrawTargetForCairoSurface(mCairoSurface, aSize);
if (!dt || !dt->IsValid()) {
return nullptr;
}
if (aRecorder) {
dt = CreateRecordingDrawTarget(aRecorder, dt);
if (!dt || !dt->IsValid()) {
return nullptr;
}
}
return dt.forget();
}
already_AddRefed<DrawTarget> PrintTarget::GetReferenceDrawTarget() {
if (!mRefDT) {
const IntSize size(1, 1);
cairo_surface_t* similar;
switch (cairo_surface_get_type(mCairoSurface)) {
#ifdef CAIRO_HAS_WIN32_SURFACE
case CAIRO_SURFACE_TYPE_WIN32:
similar = cairo_win32_surface_create_with_dib(
CairoContentToCairoFormat(cairo_surface_get_content(mCairoSurface)),
size.width, size.height);
break;
#endif
#ifdef CAIRO_HAS_QUARTZ_SURFACE
case CAIRO_SURFACE_TYPE_QUARTZ:
if (StaticPrefs::gfx_cairo_quartz_cg_layer_enabled()) {
similar = cairo_quartz_surface_create_cg_layer(
mCairoSurface, cairo_surface_get_content(mCairoSurface),
size.width, size.height);
break;
}
[[fallthrough]];
#endif
default:
similar = cairo_surface_create_similar(
mCairoSurface, cairo_surface_get_content(mCairoSurface), size.width,
size.height);
break;
}
if (cairo_surface_status(similar)) {
return nullptr;
}
RefPtr<DrawTarget> dt =
Factory::CreateDrawTargetForCairoSurface(similar, size);
// The DT addrefs the surface, so we need drop our own reference to it:
cairo_surface_destroy(similar);
if (!dt || !dt->IsValid()) {
return nullptr;
}
mRefDT = std::move(dt);
}
return do_AddRef(mRefDT);
}
/* static */
void PrintTarget::AdjustPrintJobNameForIPP(const nsAString& aJobName,
nsCString& aAdjustedJobName) {
CopyUTF16toUTF8(aJobName, aAdjustedJobName);
if (aAdjustedJobName.Length() > IPP_JOB_NAME_LIMIT_LENGTH) {
uint32_t length = RewindToPriorUTF8Codepoint(
aAdjustedJobName.get(), (IPP_JOB_NAME_LIMIT_LENGTH - 3U));
aAdjustedJobName.SetLength(length);
aAdjustedJobName.AppendLiteral("...");
}
}
/* static */
void PrintTarget::AdjustPrintJobNameForIPP(const nsAString& aJobName,
nsString& aAdjustedJobName) {
nsAutoCString jobName;
AdjustPrintJobNameForIPP(aJobName, jobName);
CopyUTF8toUTF16(jobName, aAdjustedJobName);
}
/* static */
already_AddRefed<DrawTarget> PrintTarget::CreateRecordingDrawTarget(
DrawEventRecorder* aRecorder, DrawTarget* aDrawTarget) {
MOZ_ASSERT(aRecorder);
MOZ_ASSERT(aDrawTarget);
RefPtr<DrawTarget> dt;
if (aRecorder) {
// It doesn't really matter what we pass as the DrawTarget here.
dt = gfx::Factory::CreateRecordingDrawTarget(aRecorder, aDrawTarget,
aDrawTarget->GetRect());
}
if (!dt || !dt->IsValid()) {
gfxCriticalNote
<< "Failed to create a recording DrawTarget for PrintTarget";
return nullptr;
}
return dt.forget();
}
void PrintTarget::Finish() {
if (mIsFinished) {
return;
}
mIsFinished = true;
// null surfaces are allowed here
cairo_surface_finish(mCairoSurface);
}
} // namespace mozilla::gfx
|
