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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /image/ImageRegion.h
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'image/ImageRegion.h')
-rw-r--r--image/ImageRegion.h273
1 files changed, 273 insertions, 0 deletions
diff --git a/image/ImageRegion.h b/image/ImageRegion.h
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+/* -*- Mode: C++; tab-width: 2; 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/. */
+
+#ifndef mozilla_image_ImageRegion_h
+#define mozilla_image_ImageRegion_h
+
+#include "gfxMatrix.h"
+#include "gfxPoint.h"
+#include "gfxRect.h"
+#include "gfxTypes.h"
+#include "mozilla/gfx/Matrix.h"
+#include "mozilla/gfx/Types.h"
+#include "nsSize.h"
+#include "PLDHashTable.h" // for PLDHashNumber
+
+namespace mozilla {
+namespace image {
+
+/**
+ * An axis-aligned rectangle in tiled image space, with an optional sampling
+ * restriction rect. The drawing code ensures that if a sampling restriction
+ * rect is present, any pixels sampled during the drawing process are found
+ * within that rect.
+ *
+ * The sampling restriction rect exists primarily for callers which perform
+ * pixel snapping. Other callers should generally use one of the Create()
+ * overloads.
+ */
+class ImageRegion {
+ typedef mozilla::gfx::ExtendMode ExtendMode;
+
+ public:
+ static ImageRegion Empty() {
+ return ImageRegion(gfxRect(), ExtendMode::CLAMP);
+ }
+
+ static ImageRegion Create(const gfxRect& aRect,
+ ExtendMode aExtendMode = ExtendMode::CLAMP) {
+ return ImageRegion(aRect, aExtendMode);
+ }
+
+ static ImageRegion Create(const gfxSize& aSize,
+ ExtendMode aExtendMode = ExtendMode::CLAMP) {
+ return ImageRegion(gfxRect(0, 0, aSize.width, aSize.height), aExtendMode);
+ }
+
+ static ImageRegion Create(const nsIntSize& aSize,
+ ExtendMode aExtendMode = ExtendMode::CLAMP) {
+ return ImageRegion(gfxRect(0, 0, aSize.width, aSize.height), aExtendMode);
+ }
+
+ static ImageRegion CreateWithSamplingRestriction(
+ const gfxRect& aRect, const gfxRect& aRestriction,
+ ExtendMode aExtendMode = ExtendMode::CLAMP) {
+ return ImageRegion(aRect, aRestriction, aExtendMode);
+ }
+
+ bool IsRestricted() const { return mIsRestricted; }
+ const gfxRect& Rect() const { return mRect; }
+
+ const gfxRect& Restriction() const {
+ MOZ_ASSERT(mIsRestricted);
+ return mRestriction;
+ }
+
+ bool RestrictionContains(const gfxRect& aRect) const {
+ if (!mIsRestricted) {
+ return true;
+ }
+ return mRestriction.Contains(aRect);
+ }
+
+ ImageRegion Intersect(const gfxRect& aRect) const {
+ if (mIsRestricted) {
+ return CreateWithSamplingRestriction(aRect.Intersect(mRect),
+ aRect.Intersect(mRestriction));
+ }
+ return Create(aRect.Intersect(mRect));
+ }
+
+ gfxRect IntersectAndRestrict(const gfxRect& aRect) const {
+ gfxRect intersection = mRect.Intersect(aRect);
+ if (mIsRestricted) {
+ intersection = mRestriction.Intersect(intersection);
+ }
+ return intersection;
+ }
+
+ void MoveBy(gfxFloat dx, gfxFloat dy) {
+ mRect.MoveBy(dx, dy);
+ if (mIsRestricted) {
+ mRestriction.MoveBy(dx, dy);
+ }
+ }
+
+ void Scale(gfxFloat sx, gfxFloat sy) {
+ mRect.Scale(sx, sy);
+ if (mIsRestricted) {
+ mRestriction.Scale(sx, sy);
+ }
+ }
+
+ void TransformBy(const gfxMatrix& aMatrix) {
+ mRect = aMatrix.TransformRect(mRect);
+ if (mIsRestricted) {
+ mRestriction = aMatrix.TransformRect(mRestriction);
+ }
+ }
+
+ void TransformBoundsBy(const gfxMatrix& aMatrix) {
+ mRect = aMatrix.TransformBounds(mRect);
+ if (mIsRestricted) {
+ mRestriction = aMatrix.TransformBounds(mRestriction);
+ }
+ }
+
+ ImageRegion operator-(const gfxPoint& aPt) const {
+ if (mIsRestricted) {
+ return CreateWithSamplingRestriction(mRect - aPt, mRestriction - aPt);
+ }
+ return Create(mRect - aPt);
+ }
+
+ ImageRegion operator+(const gfxPoint& aPt) const {
+ if (mIsRestricted) {
+ return CreateWithSamplingRestriction(mRect + aPt, mRestriction + aPt);
+ }
+ return Create(mRect + aPt);
+ }
+
+ gfx::ExtendMode GetExtendMode() const { return mExtendMode; }
+
+ /* ImageRegion() : mIsRestricted(false) { } */
+
+ private:
+ explicit ImageRegion(const gfxRect& aRect, ExtendMode aExtendMode)
+ : mRect(aRect), mExtendMode(aExtendMode), mIsRestricted(false) {}
+
+ ImageRegion(const gfxRect& aRect, const gfxRect& aRestriction,
+ ExtendMode aExtendMode)
+ : mRect(aRect),
+ mRestriction(aRestriction),
+ mExtendMode(aExtendMode),
+ mIsRestricted(true) {}
+
+ gfxRect mRect;
+ gfxRect mRestriction;
+ ExtendMode mExtendMode;
+ bool mIsRestricted;
+};
+
+/**
+ * An axis-aligned rectangle in tiled image space, with an optional sampling
+ * restriction rect. The drawing code ensures that if a sampling restriction
+ * rect is present, any pixels sampled during the drawing process are found
+ * within that rect.
+ *
+ * The sampling restriction rect exists primarily for callers which perform
+ * pixel snapping. Other callers should generally use one of the Create()
+ * overloads.
+ */
+class ImageIntRegion {
+ typedef mozilla::gfx::ExtendMode ExtendMode;
+
+ public:
+ static ImageIntRegion Empty() {
+ return ImageIntRegion(mozilla::gfx::IntRect(), ExtendMode::CLAMP);
+ }
+
+ static ImageIntRegion Create(const mozilla::gfx::IntRect& aRect,
+ ExtendMode aExtendMode = ExtendMode::CLAMP) {
+ return ImageIntRegion(aRect, aExtendMode);
+ }
+
+ static ImageIntRegion Create(const mozilla::gfx::IntSize& aSize,
+ ExtendMode aExtendMode = ExtendMode::CLAMP) {
+ return ImageIntRegion(
+ mozilla::gfx::IntRect(0, 0, aSize.width, aSize.height), aExtendMode);
+ }
+
+ static ImageIntRegion CreateWithSamplingRestriction(
+ const mozilla::gfx::IntRect& aRect,
+ const mozilla::gfx::IntRect& aRestriction,
+ ExtendMode aExtendMode = ExtendMode::CLAMP) {
+ return ImageIntRegion(aRect, aRestriction, aExtendMode);
+ }
+
+ bool IsRestricted() const { return mIsRestricted; }
+ const mozilla::gfx::IntRect& Rect() const { return mRect; }
+
+ const mozilla::gfx::IntRect& Restriction() const {
+ MOZ_ASSERT(mIsRestricted);
+ return mRestriction;
+ }
+
+ bool RestrictionContains(const mozilla::gfx::IntRect& aRect) const {
+ if (!mIsRestricted) {
+ return true;
+ }
+ return mRestriction.Contains(aRect);
+ }
+
+ ImageIntRegion Intersect(const mozilla::gfx::IntRect& aRect) const {
+ if (mIsRestricted) {
+ return CreateWithSamplingRestriction(aRect.Intersect(mRect),
+ aRect.Intersect(mRestriction));
+ }
+ return Create(aRect.Intersect(mRect));
+ }
+
+ mozilla::gfx::IntRect IntersectAndRestrict(
+ const mozilla::gfx::IntRect& aRect) const {
+ mozilla::gfx::IntRect intersection = mRect.Intersect(aRect);
+ if (mIsRestricted) {
+ intersection = mRestriction.Intersect(intersection);
+ }
+ return intersection;
+ }
+
+ gfx::ExtendMode GetExtendMode() const { return mExtendMode; }
+
+ ImageRegion ToImageRegion() const {
+ if (mIsRestricted) {
+ return ImageRegion::CreateWithSamplingRestriction(
+ gfxRect(mRect.x, mRect.y, mRect.width, mRect.height),
+ gfxRect(mRestriction.x, mRestriction.y, mRestriction.width,
+ mRestriction.height),
+ mExtendMode);
+ }
+ return ImageRegion::Create(
+ gfxRect(mRect.x, mRect.y, mRect.width, mRect.height), mExtendMode);
+ }
+
+ bool operator==(const ImageIntRegion& aOther) const {
+ return mExtendMode == aOther.mExtendMode &&
+ mIsRestricted == aOther.mIsRestricted &&
+ mRect.IsEqualEdges(aOther.mRect) &&
+ (!mIsRestricted || mRestriction.IsEqualEdges(aOther.mRestriction));
+ }
+
+ PLDHashNumber Hash() const {
+ return HashGeneric(mRect.x, mRect.y, mRect.width, mRect.height,
+ mRestriction.x, mRestriction.y, mRestriction.width,
+ mRestriction.height, mExtendMode, mIsRestricted);
+ }
+
+ /* ImageIntRegion() : mIsRestricted(false) { } */
+
+ private:
+ explicit ImageIntRegion(const mozilla::gfx::IntRect& aRect,
+ ExtendMode aExtendMode)
+ : mRect(aRect), mExtendMode(aExtendMode), mIsRestricted(false) {}
+
+ ImageIntRegion(const mozilla::gfx::IntRect& aRect,
+ const mozilla::gfx::IntRect& aRestriction,
+ ExtendMode aExtendMode)
+ : mRect(aRect),
+ mRestriction(aRestriction),
+ mExtendMode(aExtendMode),
+ mIsRestricted(true) {}
+
+ mozilla::gfx::IntRect mRect;
+ mozilla::gfx::IntRect mRestriction;
+ ExtendMode mExtendMode;
+ bool mIsRestricted;
+};
+
+} // namespace image
+} // namespace mozilla
+
+#endif // mozilla_image_ImageRegion_h