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gfx/skia/trunk/src/svg/SkSVGGradient.cpp@6474c204b198 (annotated)

gfx/skia/trunk/src/svg/SkSVGGradient.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1
michael@0	2	/*
michael@0	3	* Copyright 2006 The Android Open Source Project
michael@0	4	*
michael@0	5	* Use of this source code is governed by a BSD-style license that can be
michael@0	6	* found in the LICENSE file.
michael@0	7	*/
michael@0	8
michael@0	9
michael@0	10	#include "SkSVGGradient.h"
michael@0	11	#include "SkSVGParser.h"
michael@0	12	#include "SkSVGStop.h"
michael@0	13
michael@0	14	SkSVGGradient::SkSVGGradient() {
michael@0	15	}
michael@0	16
michael@0	17	SkSVGElement* SkSVGGradient::getGradient() {
michael@0	18	return this;
michael@0	19	}
michael@0	20
michael@0	21	bool SkSVGGradient::isDef() {
michael@0	22	return true;
michael@0	23	}
michael@0	24
michael@0	25	bool SkSVGGradient::isNotDef() {
michael@0	26	return false;
michael@0	27	}
michael@0	28
michael@0	29	void SkSVGGradient::translate(SkSVGParser& parser, bool defState) {
michael@0	30	INHERITED::translate(parser, defState);
michael@0	31	// !!! no support for 'objectBoundingBox' yet
michael@0	32	bool first = true;
michael@0	33	bool addedFirst = false;
michael@0	34	bool addedLast = false;
michael@0	35	SkString offsets("[");
michael@0	36	SkString* lastOffset = NULL;
michael@0	37	for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
michael@0	38	SkASSERT((*ptr)->getType() == SkSVGType_Stop);
michael@0	39	SkSVGStop* stop = (SkSVGStop*) *ptr;
michael@0	40	if (first && stop->f_offset.equals("0") == false) {
michael@0	41	addedFirst = true;
michael@0	42	offsets.append("0,");
michael@0	43	}
michael@0	44	SkString* thisOffset = &stop->f_offset;
michael@0	45	if (lastOffset && thisOffset->equals(*lastOffset)) {
michael@0	46	if (thisOffset->equals("1")) {
michael@0	47	offsets.remove(offsets.size() - 2, 2);
michael@0	48	offsets.append(".999,");
michael@0	49	} else {
michael@0	50	SkASSERT(0); // !!! need to write this case
michael@0	51	}
michael@0	52	}
michael@0	53	offsets.append(*thisOffset);
michael@0	54	if (ptr == fChildren.end() - 1) { // last
michael@0	55	if (stop->f_offset.equals("1") == false) {
michael@0	56	offsets.append(",1");
michael@0	57	addedLast = true;
michael@0	58	}
michael@0	59	} else
michael@0	60	offsets.appendUnichar(',');
michael@0	61	first = false;
michael@0	62	lastOffset = thisOffset;
michael@0	63	}
michael@0	64	offsets.appendUnichar(']');
michael@0	65	parser._addAttribute("offsets", offsets);
michael@0	66	if (addedFirst)
michael@0	67	parser.translate(*fChildren.begin(), defState);
michael@0	68	for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++)
michael@0	69	parser.translate(*ptr, defState);
michael@0	70	if (addedLast)
michael@0	71	parser.translate(*(fChildren.end() - 1), defState);
michael@0	72	}
michael@0	73
michael@0	74	void SkSVGGradient::translateGradientUnits(SkString& units) {
michael@0	75	// !!! no support for 'objectBoundingBox' yet
michael@0	76	SkASSERT(strcmp(units.c_str(), "userSpaceOnUse") == 0);
michael@0	77	}
michael@0	78
michael@0	79	void SkSVGGradient::write(SkSVGParser& parser, SkString& baseColor) {
michael@0	80	if (baseColor.c_str()[0] != '#')
michael@0	81	return;
michael@0	82	SkSVGPaint* saveHead = parser.fHead;
michael@0	83	parser.fHead = &fPaintState;
michael@0	84	parser.fSuppressPaint = true;
michael@0	85	SkString originalID(f_id);
michael@0	86	f_id.set("mask"); // write out gradient named given name + color (less initial #)
michael@0	87	f_id.append(baseColor.c_str() + 1);
michael@0	88	SkString originalColors;
michael@0	89	for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
michael@0	90	SkSVGStop* colorElement = (SkSVGStop*) *ptr;
michael@0	91	SkString& color = colorElement->fPaintState.f_stopColor;
michael@0	92	originalColors.append(color);
michael@0	93	originalColors.appendUnichar(',');
michael@0	94	SkASSERT(color.c_str()[0] == '#');
michael@0	95	SkString replacement;
michael@0	96	replacement.set("0x");
michael@0	97	replacement.append(color.c_str() + 1, 2); // add stop colors using given color, turning existing stop color into alpha
michael@0	98	SkASSERT(baseColor.c_str()[0] == '#');
michael@0	99	SkASSERT(baseColor.size() == 7);
michael@0	100	replacement.append(baseColor.c_str() + 1);
michael@0	101	color.set(replacement);
michael@0	102	}
michael@0	103	translate(parser, true);
michael@0	104	const char* originalPtr = originalColors.c_str(); // restore original gradient values
michael@0	105	for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
michael@0	106	SkSVGStop* color = (SkSVGStop*) *ptr;
michael@0	107	const char* originalEnd = strchr(originalPtr, ',');
michael@0	108	color->fPaintState.f_stopColor.set(originalPtr, originalEnd - originalPtr);
michael@0	109	originalPtr = originalEnd + 1;
michael@0	110	}
michael@0	111	f_id.set(originalID);
michael@0	112	parser.fSuppressPaint = false;
michael@0	113	parser.fHead = saveHead;
michael@0	114	}