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Unified Diff: ui/gfx/canvas.cc

Issue 854713003: More old files deletion. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Fix tryjobs? Created 5 years, 11 months ago
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Index: ui/gfx/canvas.cc
diff --git a/ui/gfx/canvas.cc b/ui/gfx/canvas.cc
deleted file mode 100644
index 7ce7c4725ecb39041d534c57fdb26ea3abca8f4b..0000000000000000000000000000000000000000
--- a/ui/gfx/canvas.cc
+++ /dev/null
@@ -1,643 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/gfx/canvas.h"
-
-#include <cmath>
-#include <limits>
-
-#include "base/i18n/rtl.h"
-#include "base/logging.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "third_party/skia/include/effects/SkGradientShader.h"
-#include "ui/gfx/font_list.h"
-#include "ui/gfx/geometry/rect_conversions.h"
-#include "ui/gfx/geometry/safe_integer_conversions.h"
-#include "ui/gfx/rect.h"
-#include "ui/gfx/scoped_canvas.h"
-#include "ui/gfx/size_conversions.h"
-#include "ui/gfx/skia_util.h"
-#include "ui/gfx/transform.h"
-
-#if defined(OS_WIN)
-#include "ui/gfx/canvas_skia_paint.h"
-#endif
-
-namespace gfx {
-
-Canvas::Canvas(const Size& size, float image_scale, bool is_opaque)
- : image_scale_(image_scale),
- canvas_(NULL) {
- Size pixel_size = ToCeiledSize(ScaleSize(size, image_scale));
- owned_canvas_ = skia::AdoptRef(skia::CreatePlatformCanvas(pixel_size.width(),
- pixel_size.height(),
- is_opaque));
- canvas_ = owned_canvas_.get();
-#if defined(OS_WIN) || defined(OS_MACOSX)
- // skia::PlatformCanvas instances are initialized to 0 by Cairo on Linux, but
- // uninitialized on Win and Mac.
- if (!is_opaque)
- owned_canvas_->clear(SkColorSetARGB(0, 0, 0, 0));
-#endif
-
- SkScalar scale_scalar = SkFloatToScalar(image_scale);
- canvas_->scale(scale_scalar, scale_scalar);
-}
-
-Canvas::Canvas(const ImageSkiaRep& image_rep, bool is_opaque)
- : image_scale_(image_rep.scale()),
- owned_canvas_(skia::AdoptRef(
- skia::CreatePlatformCanvas(image_rep.pixel_width(),
- image_rep.pixel_height(),
- is_opaque))),
- canvas_(owned_canvas_.get()) {
- SkScalar scale_scalar = SkFloatToScalar(image_scale_);
- canvas_->scale(scale_scalar, scale_scalar);
- DrawImageInt(ImageSkia(image_rep), 0, 0);
-}
-
-Canvas::Canvas()
- : image_scale_(1.0),
- owned_canvas_(skia::AdoptRef(skia::CreatePlatformCanvas(0, 0, false))),
- canvas_(owned_canvas_.get()) {
-}
-
-Canvas::~Canvas() {
-}
-
-// static
-Canvas* Canvas::CreateCanvasWithoutScaling(SkCanvas* canvas,
- float image_scale) {
- return new Canvas(canvas, image_scale);
-}
-
-void Canvas::RecreateBackingCanvas(const Size& size,
- float image_scale,
- bool is_opaque) {
- image_scale_ = image_scale;
- Size pixel_size = ToFlooredSize(ScaleSize(size, image_scale));
- owned_canvas_ = skia::AdoptRef(skia::CreatePlatformCanvas(pixel_size.width(),
- pixel_size.height(),
- is_opaque));
- canvas_ = owned_canvas_.get();
- SkScalar scale_scalar = SkFloatToScalar(image_scale);
- canvas_->scale(scale_scalar, scale_scalar);
-}
-
-// static
-void Canvas::SizeStringInt(const base::string16& text,
- const FontList& font_list,
- int* width,
- int* height,
- int line_height,
- int flags) {
- float fractional_width = *width;
- float factional_height = *height;
- SizeStringFloat(text, font_list, &fractional_width,
- &factional_height, line_height, flags);
- *width = std::ceil(fractional_width);
- *height = std::ceil(factional_height);
-}
-
-// static
-int Canvas::GetStringWidth(const base::string16& text,
- const FontList& font_list) {
- int width = 0, height = 0;
- SizeStringInt(text, font_list, &width, &height, 0, NO_ELLIPSIS);
- return width;
-}
-
-// static
-float Canvas::GetStringWidthF(const base::string16& text,
- const FontList& font_list) {
- float width = 0, height = 0;
- SizeStringFloat(text, font_list, &width, &height, 0, NO_ELLIPSIS);
- return width;
-}
-
-// static
-int Canvas::DefaultCanvasTextAlignment() {
- return base::i18n::IsRTL() ? TEXT_ALIGN_RIGHT : TEXT_ALIGN_LEFT;
-}
-
-ImageSkiaRep Canvas::ExtractImageRep() const {
- // Make a bitmap to return, and a canvas to draw into it. We don't just want
- // to call extractSubset or the copy constructor, since we want an actual copy
- // of the bitmap.
- const SkISize size = canvas_->getDeviceSize();
- SkBitmap result;
- result.allocN32Pixels(size.width(), size.height());
-
- canvas_->readPixels(&result, 0, 0);
- return ImageSkiaRep(result, image_scale_);
-}
-
-void Canvas::DrawDashedRect(const Rect& rect, SkColor color) {
- if (rect.IsEmpty())
- return;
- // Create a 2D bitmap containing alternating on/off pixels - we do this
- // so that you never get two pixels of the same color around the edges
- // of the focus rect (this may mean that opposing edges of the rect may
- // have a dot pattern out of phase to each other).
- static SkColor last_color;
- static SkBitmap* dots = NULL;
- if (!dots || last_color != color) {
- int col_pixels = 32;
- int row_pixels = 32;
-
- delete dots;
- last_color = color;
- dots = new SkBitmap;
- dots->allocN32Pixels(col_pixels, row_pixels);
- dots->eraseARGB(0, 0, 0, 0);
-
- uint32_t* dot = dots->getAddr32(0, 0);
- for (int i = 0; i < row_pixels; i++) {
- for (int u = 0; u < col_pixels; u++) {
- if ((u % 2 + i % 2) % 2 != 0) {
- dot[i * row_pixels + u] = color;
- }
- }
- }
- }
-
- // Make a shader for the bitmap with an origin of the box we'll draw. This
- // shader is refcounted and will have an initial refcount of 1.
- skia::RefPtr<SkShader> shader = skia::AdoptRef(
- SkShader::CreateBitmapShader(
- *dots, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode));
- // Assign the shader to the paint & release our reference. The paint will
- // now own the shader and the shader will be destroyed when the paint goes
- // out of scope.
- SkPaint paint;
- paint.setShader(shader.get());
-
- DrawRect(Rect(rect.x(), rect.y(), rect.width(), 1), paint);
- DrawRect(Rect(rect.x(), rect.y() + rect.height() - 1, rect.width(), 1),
- paint);
- DrawRect(Rect(rect.x(), rect.y(), 1, rect.height()), paint);
- DrawRect(Rect(rect.x() + rect.width() - 1, rect.y(), 1, rect.height()),
- paint);
-}
-
-void Canvas::Save() {
- canvas_->save();
-}
-
-void Canvas::SaveLayerAlpha(uint8 alpha) {
- canvas_->saveLayerAlpha(NULL, alpha);
-}
-
-void Canvas::SaveLayerAlpha(uint8 alpha, const Rect& layer_bounds) {
- SkRect bounds(RectToSkRect(layer_bounds));
- canvas_->saveLayerAlpha(&bounds, alpha);
-}
-
-void Canvas::Restore() {
- canvas_->restore();
-}
-
-void Canvas::ClipRect(const Rect& rect) {
- canvas_->clipRect(RectToSkRect(rect));
-}
-
-void Canvas::ClipPath(const SkPath& path, bool do_anti_alias) {
- canvas_->clipPath(path, SkRegion::kIntersect_Op, do_anti_alias);
-}
-
-bool Canvas::IsClipEmpty() const {
- return canvas_->isClipEmpty();
-}
-
-bool Canvas::GetClipBounds(Rect* bounds) {
- SkRect out;
- if (canvas_->getClipBounds(&out)) {
- *bounds = ToEnclosingRect(SkRectToRectF(out));
- return true;
- }
- *bounds = gfx::Rect();
- return false;
-}
-
-void Canvas::Translate(const Vector2d& offset) {
- canvas_->translate(SkIntToScalar(offset.x()), SkIntToScalar(offset.y()));
-}
-
-void Canvas::Scale(int x_scale, int y_scale) {
- canvas_->scale(SkIntToScalar(x_scale), SkIntToScalar(y_scale));
-}
-
-void Canvas::DrawColor(SkColor color) {
- DrawColor(color, SkXfermode::kSrcOver_Mode);
-}
-
-void Canvas::DrawColor(SkColor color, SkXfermode::Mode mode) {
- canvas_->drawColor(color, mode);
-}
-
-void Canvas::FillRect(const Rect& rect, SkColor color) {
- FillRect(rect, color, SkXfermode::kSrcOver_Mode);
-}
-
-void Canvas::FillRect(const Rect& rect,
- SkColor color,
- SkXfermode::Mode mode) {
- SkPaint paint;
- paint.setColor(color);
- paint.setStyle(SkPaint::kFill_Style);
- paint.setXfermodeMode(mode);
- DrawRect(rect, paint);
-}
-
-void Canvas::DrawRect(const Rect& rect, SkColor color) {
- DrawRect(rect, color, SkXfermode::kSrcOver_Mode);
-}
-
-void Canvas::DrawRect(const Rect& rect,
- SkColor color,
- SkXfermode::Mode mode) {
- SkPaint paint;
- paint.setColor(color);
- paint.setStyle(SkPaint::kStroke_Style);
- // Set a stroke width of 0, which will put us down the stroke rect path. If
- // we set a stroke width of 1, for example, this will internally create a
- // path and fill it, which causes problems near the edge of the canvas.
- paint.setStrokeWidth(SkIntToScalar(0));
- paint.setXfermodeMode(mode);
-
- DrawRect(rect, paint);
-}
-
-void Canvas::DrawRect(const Rect& rect, const SkPaint& paint) {
- canvas_->drawIRect(RectToSkIRect(rect), paint);
-}
-
-void Canvas::DrawPoint(const Point& p1, const SkPaint& paint) {
- canvas_->drawPoint(SkIntToScalar(p1.x()), SkIntToScalar(p1.y()), paint);
-}
-
-void Canvas::DrawLine(const Point& p1, const Point& p2, SkColor color) {
- SkPaint paint;
- paint.setColor(color);
- paint.setStrokeWidth(SkIntToScalar(1));
- DrawLine(p1, p2, paint);
-}
-
-void Canvas::DrawLine(const Point& p1, const Point& p2, const SkPaint& paint) {
- canvas_->drawLine(SkIntToScalar(p1.x()), SkIntToScalar(p1.y()),
- SkIntToScalar(p2.x()), SkIntToScalar(p2.y()), paint);
-}
-
-void Canvas::DrawCircle(const Point& center_point,
- int radius,
- const SkPaint& paint) {
- canvas_->drawCircle(SkIntToScalar(center_point.x()),
- SkIntToScalar(center_point.y()), SkIntToScalar(radius), paint);
-}
-
-void Canvas::DrawRoundRect(const Rect& rect,
- int radius,
- const SkPaint& paint) {
- canvas_->drawRoundRect(RectToSkRect(rect), SkIntToScalar(radius),
- SkIntToScalar(radius), paint);
-}
-
-void Canvas::DrawPath(const SkPath& path, const SkPaint& paint) {
- canvas_->drawPath(path, paint);
-}
-
-void Canvas::DrawFocusRect(const Rect& rect) {
- DrawDashedRect(rect, SK_ColorGRAY);
-}
-
-void Canvas::DrawSolidFocusRect(const Rect& rect, SkColor color) {
- SkPaint paint;
- paint.setColor(color);
- paint.setStrokeWidth(SkIntToScalar(1));
- // Note: We cannot use DrawRect since it would create a path and fill it which
- // would cause problems near the edge of the canvas.
- int x1 = std::min(rect.x(), rect.right());
- int x2 = std::max(rect.x(), rect.right());
- int y1 = std::min(rect.y(), rect.bottom());
- int y2 = std::max(rect.y(), rect.bottom());
- DrawLine(Point(x1, y1), Point(x2, y1), paint);
- DrawLine(Point(x1, y2), Point(x2, y2), paint);
- DrawLine(Point(x1, y1), Point(x1, y2), paint);
- DrawLine(Point(x2, y1), Point(x2, y2 + 1), paint);
-}
-
-void Canvas::DrawImageInt(const ImageSkia& image, int x, int y) {
- SkPaint paint;
- DrawImageInt(image, x, y, paint);
-}
-
-void Canvas::DrawImageInt(const ImageSkia& image, int x, int y, uint8 a) {
- SkPaint paint;
- paint.setAlpha(a);
- DrawImageInt(image, x, y, paint);
-}
-
-void Canvas::DrawImageInt(const ImageSkia& image,
- int x,
- int y,
- const SkPaint& paint) {
- const ImageSkiaRep& image_rep = image.GetRepresentation(image_scale_);
- if (image_rep.is_null())
- return;
- const SkBitmap& bitmap = image_rep.sk_bitmap();
- float bitmap_scale = image_rep.scale();
-
- ScopedCanvas scoper(this);
- canvas_->scale(SkFloatToScalar(1.0f / bitmap_scale),
- SkFloatToScalar(1.0f / bitmap_scale));
- canvas_->drawBitmap(bitmap,
- SkFloatToScalar(x * bitmap_scale),
- SkFloatToScalar(y * bitmap_scale),
- &paint);
-}
-
-void Canvas::DrawImageInt(const ImageSkia& image,
- int src_x,
- int src_y,
- int src_w,
- int src_h,
- int dest_x,
- int dest_y,
- int dest_w,
- int dest_h,
- bool filter) {
- SkPaint p;
- DrawImageInt(image, src_x, src_y, src_w, src_h, dest_x, dest_y,
- dest_w, dest_h, filter, p);
-}
-
-void Canvas::DrawImageInt(const ImageSkia& image,
- int src_x,
- int src_y,
- int src_w,
- int src_h,
- int dest_x,
- int dest_y,
- int dest_w,
- int dest_h,
- bool filter,
- const SkPaint& paint) {
- DrawImageIntHelper(image, src_x, src_y, src_w, src_h, dest_x, dest_y, dest_w,
- dest_h, filter, paint, image_scale_, false);
-}
-
-void Canvas::DrawImageIntInPixel(const ImageSkia& image,
- int src_x,
- int src_y,
- int src_w,
- int src_h,
- int dest_x,
- int dest_y,
- int dest_w,
- int dest_h,
- bool filter,
- const SkPaint& paint) {
- // All values passed into this function are in pixels, i.e. no scaling needs
- // be done.
- // Logic as below:-
- // 1. Get the matrix transform from the canvas.
- // 2. Set the scale in the matrix to 1.0 while honoring the direction of the
- // the scale (x/y). Example RTL layouts.
- // 3. Round off the X and Y translation components in the matrix. This is to
- // reduce floating point errors during rect transformation. This is needed
- // for fractional scale factors like 1.25/1.5, etc.
- // 4. Save the current state of the canvas.
- // 5. Set the modified matrix in the canvas. This ensures that no scaling
- // will be done for draw operations on the canvas.
- // 6. Draw the image.
- // 7. Restore the state of the canvas and the SkCanvas matrix stack.
- SkMatrix matrix = canvas_->getTotalMatrix();
-
- // Ensure that the direction of the x and y scales is preserved. This is
- // important for RTL layouts.
- matrix.setScaleX(matrix.getScaleX() > 0 ? 1.0f : -1.0f);
- matrix.setScaleY(matrix.getScaleY() > 0 ? 1.0f : -1.0f);
-
- // Floor so that we get consistent rounding.
- matrix.setTranslateX(SkScalarFloorToScalar(matrix.getTranslateX()));
- matrix.setTranslateY(SkScalarFloorToScalar(matrix.getTranslateY()));
-
- ScopedCanvas scoper(this);
-
- canvas_->setMatrix(matrix);
-
- DrawImageIntHelper(image,
- src_x,
- src_y,
- src_w,
- src_h,
- dest_x,
- dest_y,
- dest_w,
- dest_h,
- filter,
- paint,
- image_scale_,
- true);
-}
-
-void Canvas::DrawImageInPath(const ImageSkia& image,
- int x,
- int y,
- const SkPath& path,
- const SkPaint& paint) {
- const ImageSkiaRep& image_rep = image.GetRepresentation(image_scale_);
- if (image_rep.is_null())
- return;
-
- SkMatrix matrix;
- matrix.setTranslate(SkIntToScalar(x), SkIntToScalar(y));
- skia::RefPtr<SkShader> shader = CreateImageRepShader(
- image_rep,
- SkShader::kRepeat_TileMode,
- matrix);
-
- SkPaint p(paint);
- p.setShader(shader.get());
- canvas_->drawPath(path, p);
-}
-
-void Canvas::DrawStringRect(const base::string16& text,
- const FontList& font_list,
- SkColor color,
- const Rect& display_rect) {
- DrawStringRectWithFlags(text, font_list, color, display_rect,
- DefaultCanvasTextAlignment());
-}
-
-void Canvas::DrawStringRectWithFlags(const base::string16& text,
- const FontList& font_list,
- SkColor color,
- const Rect& display_rect,
- int flags) {
- DrawStringRectWithShadows(text, font_list, color, display_rect, 0, flags,
- ShadowValues());
-}
-
-void Canvas::TileImageInt(const ImageSkia& image,
- int x,
- int y,
- int w,
- int h) {
- TileImageInt(image, 0, 0, x, y, w, h);
-}
-
-void Canvas::TileImageInt(const ImageSkia& image,
- int src_x,
- int src_y,
- int dest_x,
- int dest_y,
- int w,
- int h) {
- TileImageInt(image, src_x, src_y, 1.0f, 1.0f, dest_x, dest_y, w, h);
-}
-
-void Canvas::TileImageInt(const ImageSkia& image,
- int src_x,
- int src_y,
- float tile_scale_x,
- float tile_scale_y,
- int dest_x,
- int dest_y,
- int w,
- int h) {
- if (!IntersectsClipRectInt(dest_x, dest_y, w, h))
- return;
-
- const ImageSkiaRep& image_rep = image.GetRepresentation(image_scale_);
- if (image_rep.is_null())
- return;
-
- SkMatrix shader_scale;
- shader_scale.setScale(SkFloatToScalar(tile_scale_x),
- SkFloatToScalar(tile_scale_y));
- shader_scale.preTranslate(SkIntToScalar(-src_x), SkIntToScalar(-src_y));
- shader_scale.postTranslate(SkIntToScalar(dest_x), SkIntToScalar(dest_y));
-
- skia::RefPtr<SkShader> shader = CreateImageRepShader(
- image_rep,
- SkShader::kRepeat_TileMode,
- shader_scale);
-
- SkPaint paint;
- paint.setShader(shader.get());
- paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
-
- SkRect dest_rect = { SkIntToScalar(dest_x),
- SkIntToScalar(dest_y),
- SkIntToScalar(dest_x + w),
- SkIntToScalar(dest_y + h) };
- canvas_->drawRect(dest_rect, paint);
-}
-
-NativeDrawingContext Canvas::BeginPlatformPaint() {
- return skia::BeginPlatformPaint(canvas_);
-}
-
-void Canvas::EndPlatformPaint() {
- skia::EndPlatformPaint(canvas_);
-}
-
-void Canvas::Transform(const gfx::Transform& transform) {
- canvas_->concat(transform.matrix());
-}
-
-Canvas::Canvas(SkCanvas* canvas, float image_scale)
- : image_scale_(image_scale),
- owned_canvas_(),
- canvas_(canvas) {
- DCHECK(canvas);
-}
-
-bool Canvas::IntersectsClipRectInt(int x, int y, int w, int h) {
- SkRect clip;
- return canvas_->getClipBounds(&clip) &&
- clip.intersect(SkIntToScalar(x), SkIntToScalar(y), SkIntToScalar(x + w),
- SkIntToScalar(y + h));
-}
-
-bool Canvas::IntersectsClipRect(const Rect& rect) {
- return IntersectsClipRectInt(rect.x(), rect.y(),
- rect.width(), rect.height());
-}
-
-void Canvas::DrawImageIntHelper(const ImageSkia& image,
- int src_x,
- int src_y,
- int src_w,
- int src_h,
- int dest_x,
- int dest_y,
- int dest_w,
- int dest_h,
- bool filter,
- const SkPaint& paint,
- float image_scale,
- bool pixel) {
- DLOG_ASSERT(src_x + src_w < std::numeric_limits<int16_t>::max() &&
- src_y + src_h < std::numeric_limits<int16_t>::max());
- if (src_w <= 0 || src_h <= 0) {
- NOTREACHED() << "Attempting to draw bitmap from an empty rect!";
- return;
- }
-
- if (!IntersectsClipRectInt(dest_x, dest_y, dest_w, dest_h))
- return;
-
- float user_scale_x = static_cast<float>(dest_w) / src_w;
- float user_scale_y = static_cast<float>(dest_h) / src_h;
-
- const ImageSkiaRep& image_rep = image.GetRepresentation(image_scale);
- if (image_rep.is_null())
- return;
-
- SkRect dest_rect = { SkIntToScalar(dest_x),
- SkIntToScalar(dest_y),
- SkIntToScalar(dest_x + dest_w),
- SkIntToScalar(dest_y + dest_h) };
-
- if (src_w == dest_w && src_h == dest_h &&
- user_scale_x == 1.0f && user_scale_y == 1.0f &&
- image_rep.scale() == 1.0f && !pixel) {
- // Workaround for apparent bug in Skia that causes image to occasionally
- // shift.
- SkIRect src_rect = { src_x, src_y, src_x + src_w, src_y + src_h };
- const SkBitmap& bitmap = image_rep.sk_bitmap();
- canvas_->drawBitmapRect(bitmap, &src_rect, dest_rect, &paint);
- return;
- }
-
- // Make a bitmap shader that contains the bitmap we want to draw. This is
- // basically what SkCanvas.drawBitmap does internally, but it gives us
- // more control over quality and will use the mipmap in the source image if
- // it has one, whereas drawBitmap won't.
- SkMatrix shader_scale;
- shader_scale.setScale(SkFloatToScalar(user_scale_x),
- SkFloatToScalar(user_scale_y));
- shader_scale.preTranslate(SkIntToScalar(-src_x), SkIntToScalar(-src_y));
- shader_scale.postTranslate(SkIntToScalar(dest_x), SkIntToScalar(dest_y));
-
- skia::RefPtr<SkShader> shader = CreateImageRepShaderForScale(
- image_rep,
- SkShader::kRepeat_TileMode,
- shader_scale,
- pixel ? 1.0f : image_rep.scale());
-
- // Set up our paint to use the shader & release our reference (now just owned
- // by the paint).
- SkPaint p(paint);
- p.setFilterLevel(filter ? SkPaint::kLow_FilterLevel
- : SkPaint::kNone_FilterLevel);
- p.setShader(shader.get());
-
- // The rect will be filled by the bitmap.
- canvas_->drawRect(dest_rect, p);
-}
-
-} // namespace gfx
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