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-rw-r--r--gfx/thebes/PrintTarget.cpp200
1 files changed, 200 insertions, 0 deletions
diff --git a/gfx/thebes/PrintTarget.cpp b/gfx/thebes/PrintTarget.cpp
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+++ b/gfx/thebes/PrintTarget.cpp
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+/* -*- 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