skia2/debugger/SkDebugCanvas.cpp
2013-06-06 23:59:28 +00:00

431 lines
13 KiB
C++

/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkColorPriv.h"
#include "SkDebugCanvas.h"
#include "SkDrawCommand.h"
#include "SkDrawFilter.h"
#include "SkDevice.h"
#include "SkXfermode.h"
#ifdef SK_BUILD_FOR_WIN
// iostream includes xlocale which generates warning 4530 because we're compiling without
// exceptions
#pragma warning(push)
#pragma warning(disable : 4530)
#endif
#include <iostream>
#ifdef SK_BUILD_FOR_WIN
#pragma warning(pop)
#endif
static SkBitmap make_noconfig_bm(int width, int height) {
SkBitmap bm;
bm.setConfig(SkBitmap::kNo_Config, width, height);
return bm;
}
SkDebugCanvas::SkDebugCanvas(int width, int height)
: INHERITED(make_noconfig_bm(width, height))
, fOverdrawViz(false)
, fOverdrawFilter(NULL)
, fOutstandingSaveCount(0) {
// TODO(chudy): Free up memory from all draw commands in destructor.
fWidth = width;
fHeight = height;
// do we need fBm anywhere?
fBm.setConfig(SkBitmap::kNo_Config, fWidth, fHeight);
fFilter = false;
fIndex = 0;
fUserMatrix.reset();
}
SkDebugCanvas::~SkDebugCanvas() {
fCommandVector.deleteAll();
SkSafeUnref(fOverdrawFilter);
}
void SkDebugCanvas::addDrawCommand(SkDrawCommand* command) {
fCommandVector.push(command);
}
void SkDebugCanvas::draw(SkCanvas* canvas) {
if(!fCommandVector.isEmpty()) {
for (int i = 0; i < fCommandVector.count(); i++) {
if (fCommandVector[i]->isVisible()) {
fCommandVector[i]->execute(canvas);
}
}
}
fIndex = fCommandVector.count() - 1;
}
void SkDebugCanvas::applyUserTransform(SkCanvas* canvas) {
canvas->concat(fUserMatrix);
}
int SkDebugCanvas::getCommandAtPoint(int x, int y, int index) {
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
bitmap.allocPixels();
SkCanvas canvas(bitmap);
canvas.translate(SkIntToScalar(-x), SkIntToScalar(-y));
applyUserTransform(&canvas);
int layer = 0;
SkColor prev = bitmap.getColor(0,0);
for (int i = 0; i < index; i++) {
if (fCommandVector[i]->isVisible()) {
fCommandVector[i]->execute(&canvas);
}
if (prev != bitmap.getColor(0,0)) {
layer = i;
}
prev = bitmap.getColor(0,0);
}
return layer;
}
static SkPMColor OverdrawXferModeProc(SkPMColor src, SkPMColor dst) {
// This table encodes the color progression of the overdraw visualization
static const SkPMColor gTable[] = {
SkPackARGB32(0x00, 0x00, 0x00, 0x00),
SkPackARGB32(0xFF, 128, 158, 255),
SkPackARGB32(0xFF, 170, 185, 212),
SkPackARGB32(0xFF, 213, 195, 170),
SkPackARGB32(0xFF, 255, 192, 127),
SkPackARGB32(0xFF, 255, 185, 85),
SkPackARGB32(0xFF, 255, 165, 42),
SkPackARGB32(0xFF, 255, 135, 0),
SkPackARGB32(0xFF, 255, 95, 0),
SkPackARGB32(0xFF, 255, 50, 0),
SkPackARGB32(0xFF, 255, 0, 0)
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gTable)-1; ++i) {
if (gTable[i] == dst) {
return gTable[i+1];
}
}
return gTable[SK_ARRAY_COUNT(gTable)-1];
}
// The OverdrawFilter modifies every paint to use an SkProcXfermode which
// in turn invokes OverdrawXferModeProc
class OverdrawFilter : public SkDrawFilter {
public:
OverdrawFilter() {
fXferMode = new SkProcXfermode(OverdrawXferModeProc);
}
virtual ~OverdrawFilter() {
delete fXferMode;
}
virtual bool filter(SkPaint* p, Type) SK_OVERRIDE {
p->setXfermode(fXferMode);
return true;
}
protected:
SkXfermode* fXferMode;
private:
typedef SkDrawFilter INHERITED;
};
void SkDebugCanvas::drawTo(SkCanvas* canvas, int index) {
SkASSERT(!fCommandVector.isEmpty());
SkASSERT(index < fCommandVector.count());
int i;
// This only works assuming the canvas and device are the same ones that
// were previously drawn into because they need to preserve all saves
// and restores.
if (fIndex < index) {
i = fIndex + 1;
} else {
for (int j = 0; j < fOutstandingSaveCount; j++) {
canvas->restore();
}
i = 0;
canvas->clear(SK_ColorTRANSPARENT);
canvas->resetMatrix();
SkRect rect = SkRect::MakeWH(SkIntToScalar(fWidth),
SkIntToScalar(fHeight));
canvas->clipRect(rect, SkRegion::kReplace_Op );
applyUserTransform(canvas);
fOutstandingSaveCount = 0;
// The setting of the draw filter has to go here (rather than in
// SkRasterWidget) due to the canvas restores this class performs.
// Since the draw filter is stored in the layer stack if we
// call setDrawFilter on anything but the root layer odd things happen
if (fOverdrawViz) {
if (NULL == fOverdrawFilter) {
fOverdrawFilter = new OverdrawFilter;
}
if (fOverdrawFilter != canvas->getDrawFilter()) {
canvas->setDrawFilter(fOverdrawFilter);
}
} else {
canvas->setDrawFilter(NULL);
}
}
for (; i <= index; i++) {
if (i == index && fFilter) {
SkPaint p;
p.setColor(0xAAFFFFFF);
canvas->save();
canvas->resetMatrix();
SkRect mask;
mask.set(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(fWidth), SkIntToScalar(fHeight));
canvas->clipRect(mask, SkRegion::kReplace_Op, false);
canvas->drawRectCoords(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(fWidth), SkIntToScalar(fHeight), p);
canvas->restore();
}
if (fCommandVector[i]->isVisible()) {
fCommandVector[i]->execute(canvas);
fCommandVector[i]->trackSaveState(&fOutstandingSaveCount);
}
}
fMatrix = canvas->getTotalMatrix();
fClip = canvas->getTotalClip().getBounds();
fIndex = index;
}
void SkDebugCanvas::deleteDrawCommandAt(int index) {
SkASSERT(index < fCommandVector.count());
delete fCommandVector[index];
fCommandVector.remove(index);
}
SkDrawCommand* SkDebugCanvas::getDrawCommandAt(int index) {
SkASSERT(index < fCommandVector.count());
return fCommandVector[index];
}
void SkDebugCanvas::setDrawCommandAt(int index, SkDrawCommand* command) {
SkASSERT(index < fCommandVector.count());
delete fCommandVector[index];
fCommandVector[index] = command;
}
SkTDArray<SkString*>* SkDebugCanvas::getCommandInfo(int index) {
SkASSERT(index < fCommandVector.count());
return fCommandVector[index]->Info();
}
bool SkDebugCanvas::getDrawCommandVisibilityAt(int index) {
SkASSERT(index < fCommandVector.count());
return fCommandVector[index]->isVisible();
}
const SkTDArray <SkDrawCommand*>& SkDebugCanvas::getDrawCommands() const {
return fCommandVector;
}
SkTDArray <SkDrawCommand*>& SkDebugCanvas::getDrawCommands() {
return fCommandVector;
}
// TODO(chudy): Free command string memory.
SkTArray<SkString>* SkDebugCanvas::getDrawCommandsAsStrings() const {
SkTArray<SkString>* commandString = new SkTArray<SkString>(fCommandVector.count());
if (!fCommandVector.isEmpty()) {
for (int i = 0; i < fCommandVector.count(); i ++) {
commandString->push_back() = fCommandVector[i]->toString();
}
}
return commandString;
}
void SkDebugCanvas::toggleFilter(bool toggle) {
fFilter = toggle;
}
void SkDebugCanvas::clear(SkColor color) {
addDrawCommand(new Clear(color));
}
bool SkDebugCanvas::clipPath(const SkPath& path, SkRegion::Op op, bool doAA) {
addDrawCommand(new ClipPath(path, op, doAA));
return true;
}
bool SkDebugCanvas::clipRect(const SkRect& rect, SkRegion::Op op, bool doAA) {
addDrawCommand(new ClipRect(rect, op, doAA));
return true;
}
bool SkDebugCanvas::clipRRect(const SkRRect& rrect, SkRegion::Op op, bool doAA) {
addDrawCommand(new ClipRRect(rrect, op, doAA));
return true;
}
bool SkDebugCanvas::clipRegion(const SkRegion& region, SkRegion::Op op) {
addDrawCommand(new ClipRegion(region, op));
return true;
}
bool SkDebugCanvas::concat(const SkMatrix& matrix) {
addDrawCommand(new Concat(matrix));
return true;
}
void SkDebugCanvas::drawBitmap(const SkBitmap& bitmap, SkScalar left,
SkScalar top, const SkPaint* paint = NULL) {
addDrawCommand(new DrawBitmap(bitmap, left, top, paint));
}
void SkDebugCanvas::drawBitmapRectToRect(const SkBitmap& bitmap,
const SkRect* src, const SkRect& dst, const SkPaint* paint) {
addDrawCommand(new DrawBitmapRect(bitmap, src, dst, paint));
}
void SkDebugCanvas::drawBitmapMatrix(const SkBitmap& bitmap,
const SkMatrix& matrix, const SkPaint* paint) {
addDrawCommand(new DrawBitmapMatrix(bitmap, matrix, paint));
}
void SkDebugCanvas::drawBitmapNine(const SkBitmap& bitmap,
const SkIRect& center, const SkRect& dst, const SkPaint* paint) {
addDrawCommand(new DrawBitmapNine(bitmap, center, dst, paint));
}
void SkDebugCanvas::drawData(const void* data, size_t length) {
addDrawCommand(new DrawData(data, length));
}
void SkDebugCanvas::beginCommentGroup(const char* description) {
addDrawCommand(new BeginCommentGroup(description));
}
void SkDebugCanvas::addComment(const char* kywd, const char* value) {
addDrawCommand(new Comment(kywd, value));
}
void SkDebugCanvas::endCommentGroup() {
addDrawCommand(new EndCommentGroup());
}
void SkDebugCanvas::drawOval(const SkRect& oval, const SkPaint& paint) {
addDrawCommand(new DrawOval(oval, paint));
}
void SkDebugCanvas::drawPaint(const SkPaint& paint) {
addDrawCommand(new DrawPaint(paint));
}
void SkDebugCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
addDrawCommand(new DrawPath(path, paint));
}
void SkDebugCanvas::drawPicture(SkPicture& picture) {
addDrawCommand(new DrawPicture(picture));
}
void SkDebugCanvas::drawPoints(PointMode mode, size_t count,
const SkPoint pts[], const SkPaint& paint) {
addDrawCommand(new DrawPoints(mode, count, pts, paint));
}
void SkDebugCanvas::drawPosText(const void* text, size_t byteLength,
const SkPoint pos[], const SkPaint& paint) {
addDrawCommand(new DrawPosText(text, byteLength, pos, paint));
}
void SkDebugCanvas::drawPosTextH(const void* text, size_t byteLength,
const SkScalar xpos[], SkScalar constY, const SkPaint& paint) {
addDrawCommand(new DrawPosTextH(text, byteLength, xpos, constY, paint));
}
void SkDebugCanvas::drawRect(const SkRect& rect, const SkPaint& paint) {
// NOTE(chudy): Messing up when renamed to DrawRect... Why?
addDrawCommand(new DrawRectC(rect, paint));
}
void SkDebugCanvas::drawRRect(const SkRRect& rrect, const SkPaint& paint) {
addDrawCommand(new DrawRRect(rrect, paint));
}
void SkDebugCanvas::drawSprite(const SkBitmap& bitmap, int left, int top,
const SkPaint* paint = NULL) {
addDrawCommand(new DrawSprite(bitmap, left, top, paint));
}
void SkDebugCanvas::drawText(const void* text, size_t byteLength, SkScalar x,
SkScalar y, const SkPaint& paint) {
addDrawCommand(new DrawTextC(text, byteLength, x, y, paint));
}
void SkDebugCanvas::drawTextOnPath(const void* text, size_t byteLength,
const SkPath& path, const SkMatrix* matrix, const SkPaint& paint) {
addDrawCommand(new DrawTextOnPath(text, byteLength, path, matrix, paint));
}
void SkDebugCanvas::drawVertices(VertexMode vmode, int vertexCount,
const SkPoint vertices[], const SkPoint texs[], const SkColor colors[],
SkXfermode*, const uint16_t indices[], int indexCount,
const SkPaint& paint) {
addDrawCommand(new DrawVertices(vmode, vertexCount, vertices, texs, colors,
NULL, indices, indexCount, paint));
}
void SkDebugCanvas::restore() {
addDrawCommand(new Restore());
}
bool SkDebugCanvas::rotate(SkScalar degrees) {
addDrawCommand(new Rotate(degrees));
return true;
}
int SkDebugCanvas::save(SaveFlags flags) {
addDrawCommand(new Save(flags));
return true;
}
int SkDebugCanvas::saveLayer(const SkRect* bounds, const SkPaint* paint,
SaveFlags flags) {
addDrawCommand(new SaveLayer(bounds, paint, flags));
return true;
}
bool SkDebugCanvas::scale(SkScalar sx, SkScalar sy) {
addDrawCommand(new Scale(sx, sy));
return true;
}
void SkDebugCanvas::setMatrix(const SkMatrix& matrix) {
addDrawCommand(new SetMatrix(matrix));
}
bool SkDebugCanvas::skew(SkScalar sx, SkScalar sy) {
addDrawCommand(new Skew(sx, sy));
return true;
}
bool SkDebugCanvas::translate(SkScalar dx, SkScalar dy) {
addDrawCommand(new Translate(dx, dy));
return true;
}
void SkDebugCanvas::toggleCommand(int index, bool toggle) {
SkASSERT(index < fCommandVector.count());
fCommandVector[index]->setVisible(toggle);
}