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Diffstat (limited to 'thirdparty/thorvg/src/lib/tvgShapeImpl.h')
-rw-r--r--thirdparty/thorvg/src/lib/tvgShapeImpl.h392
1 files changed, 392 insertions, 0 deletions
diff --git a/thirdparty/thorvg/src/lib/tvgShapeImpl.h b/thirdparty/thorvg/src/lib/tvgShapeImpl.h
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+/*
+ * Copyright (c) 2020-2021 Samsung Electronics Co., Ltd. All rights reserved.
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef _TVG_SHAPE_IMPL_H_
+#define _TVG_SHAPE_IMPL_H_
+
+#include <memory.h>
+#include "tvgPaint.h"
+
+/************************************************************************/
+/* Internal Class Implementation */
+/************************************************************************/
+
+struct ShapeStroke
+{
+ float width;
+ uint8_t color[4];
+ Fill *fill;
+ float* dashPattern;
+ uint32_t dashCnt;
+ StrokeCap cap;
+ StrokeJoin join;
+
+ void copy(const ShapeStroke* src)
+ {
+ width = src->width;
+ dashCnt = src->dashCnt;
+ cap = src->cap;
+ join = src->join;
+
+ memcpy(color, src->color, sizeof(color));
+ if (dashCnt > 0) {
+ dashPattern = static_cast<float*>(malloc(sizeof(float) * dashCnt));
+ memcpy(dashPattern, src->dashPattern, sizeof(float) * dashCnt);
+ }
+ if (src->fill) fill = src->fill->duplicate();
+ }
+
+ void clear()
+ {
+ if (dashPattern) free(dashPattern);
+ if (fill) delete(fill);
+ }
+};
+
+
+struct ShapePath
+{
+ PathCommand* cmds = nullptr;
+ uint32_t cmdCnt = 0;
+ uint32_t reservedCmdCnt = 0;
+
+ Point *pts = nullptr;
+ uint32_t ptsCnt = 0;
+ uint32_t reservedPtsCnt = 0;
+
+ ~ShapePath()
+ {
+ if (cmds) free(cmds);
+ if (pts) free(pts);
+ }
+
+ ShapePath()
+ {
+ }
+
+ void duplicate(const ShapePath* src)
+ {
+ if (src->cmdCnt == 0 || src->ptsCnt == 0) return;
+
+ cmdCnt = src->cmdCnt;
+ reservedCmdCnt = src->reservedCmdCnt;
+ ptsCnt = src->ptsCnt;
+ reservedPtsCnt = src->reservedPtsCnt;
+
+ cmds = static_cast<PathCommand*>(malloc(sizeof(PathCommand) * reservedCmdCnt));
+ if (!cmds) return;
+ memcpy(cmds, src->cmds, sizeof(PathCommand) * cmdCnt);
+
+ pts = static_cast<Point*>(malloc(sizeof(Point) * reservedPtsCnt));
+ if (!pts) {
+ free(cmds);
+ return;
+ }
+ memcpy(pts, src->pts, sizeof(Point) * ptsCnt);
+ }
+
+ void reserveCmd(uint32_t cmdCnt)
+ {
+ if (cmdCnt <= reservedCmdCnt) return;
+ reservedCmdCnt = cmdCnt;
+ cmds = static_cast<PathCommand*>(realloc(cmds, sizeof(PathCommand) * reservedCmdCnt));
+ }
+
+ void reservePts(uint32_t ptsCnt)
+ {
+ if (ptsCnt <= reservedPtsCnt) return;
+ reservedPtsCnt = ptsCnt;
+ pts = static_cast<Point*>(realloc(pts, sizeof(Point) * reservedPtsCnt));
+ }
+
+ void grow(uint32_t cmdCnt, uint32_t ptsCnt)
+ {
+ reserveCmd(this->cmdCnt + cmdCnt);
+ reservePts(this->ptsCnt + ptsCnt);
+ }
+
+ void reset()
+ {
+ cmdCnt = 0;
+ ptsCnt = 0;
+ }
+
+ void append(const PathCommand* cmds, uint32_t cmdCnt, const Point* pts, uint32_t ptsCnt)
+ {
+ memcpy(this->cmds + this->cmdCnt, cmds, sizeof(PathCommand) * cmdCnt);
+ memcpy(this->pts + this->ptsCnt, pts, sizeof(Point) * ptsCnt);
+ this->cmdCnt += cmdCnt;
+ this->ptsCnt += ptsCnt;
+ }
+
+ void moveTo(float x, float y)
+ {
+ if (cmdCnt + 1 > reservedCmdCnt) reserveCmd((cmdCnt + 1) * 2);
+ if (ptsCnt + 2 > reservedPtsCnt) reservePts((ptsCnt + 2) * 2);
+
+ cmds[cmdCnt++] = PathCommand::MoveTo;
+ pts[ptsCnt++] = {x, y};
+ }
+
+ void lineTo(float x, float y)
+ {
+ if (cmdCnt + 1 > reservedCmdCnt) reserveCmd((cmdCnt + 1) * 2);
+ if (ptsCnt + 2 > reservedPtsCnt) reservePts((ptsCnt + 2) * 2);
+
+ cmds[cmdCnt++] = PathCommand::LineTo;
+ pts[ptsCnt++] = {x, y};
+ }
+
+ void cubicTo(float cx1, float cy1, float cx2, float cy2, float x, float y)
+ {
+ if (cmdCnt + 1 > reservedCmdCnt) reserveCmd((cmdCnt + 1) * 2);
+ if (ptsCnt + 3 > reservedPtsCnt) reservePts((ptsCnt + 3) * 2);
+
+ cmds[cmdCnt++] = PathCommand::CubicTo;
+ pts[ptsCnt++] = {cx1, cy1};
+ pts[ptsCnt++] = {cx2, cy2};
+ pts[ptsCnt++] = {x, y};
+ }
+
+ void close()
+ {
+ if (cmdCnt > 0 && cmds[cmdCnt - 1] == PathCommand::Close) return;
+
+ if (cmdCnt + 1 > reservedCmdCnt) reserveCmd((cmdCnt + 1) * 2);
+ cmds[cmdCnt++] = PathCommand::Close;
+ }
+
+ bool bounds(float* x, float* y, float* w, float* h) const
+ {
+ if (ptsCnt == 0) return false;
+
+ Point min = { pts[0].x, pts[0].y };
+ Point max = { pts[0].x, pts[0].y };
+
+ for (uint32_t i = 1; i < ptsCnt; ++i) {
+ if (pts[i].x < min.x) min.x = pts[i].x;
+ if (pts[i].y < min.y) min.y = pts[i].y;
+ if (pts[i].x > max.x) max.x = pts[i].x;
+ if (pts[i].y > max.y) max.y = pts[i].y;
+ }
+
+ if (x) *x = min.x;
+ if (y) *y = min.y;
+ if (w) *w = max.x - min.x;
+ if (h) *h = max.y - min.y;
+
+ return true;
+ }
+};
+
+
+struct Shape::Impl
+{
+ ShapePath path;
+ Fill *fill = nullptr;
+ ShapeStroke *stroke = nullptr;
+ uint8_t color[4] = {0, 0, 0, 0}; //r, g, b, a
+ FillRule rule = FillRule::Winding;
+ RenderData rdata = nullptr; //engine data
+ Shape *shape = nullptr;
+ uint32_t flag = RenderUpdateFlag::None;
+
+ Impl(Shape* s) : shape(s)
+ {
+ }
+
+ ~Impl()
+ {
+ if (fill) delete(fill);
+ if (stroke) {
+ stroke->clear();
+ free (stroke);
+ }
+ }
+
+ bool dispose(RenderMethod& renderer)
+ {
+ auto ret = renderer.dispose(rdata);
+ rdata = nullptr;
+ return ret;
+ }
+
+ bool render(RenderMethod& renderer)
+ {
+ return renderer.renderShape(rdata);
+ }
+
+ void* update(RenderMethod& renderer, const RenderTransform* transform, uint32_t opacity, Array<RenderData>& clips, RenderUpdateFlag pFlag)
+ {
+ this->rdata = renderer.prepare(*shape, this->rdata, transform, opacity, clips, static_cast<RenderUpdateFlag>(pFlag | flag));
+ flag = RenderUpdateFlag::None;
+ return this->rdata;
+ }
+
+ RenderRegion bounds(RenderMethod& renderer)
+ {
+ return renderer.region(rdata);
+ }
+
+ bool bounds(float* x, float* y, float* w, float* h)
+ {
+ auto ret = path.bounds(x, y, w, h);
+
+ //Stroke feathering
+ if (stroke) {
+ if (x) *x -= stroke->width * 0.5f;
+ if (y) *y -= stroke->width * 0.5f;
+ if (w) *w += stroke->width;
+ if (h) *h += stroke->width;
+ }
+ return ret;
+ }
+
+ bool strokeWidth(float width)
+ {
+ //TODO: Size Exception?
+
+ if (!stroke) stroke = static_cast<ShapeStroke*>(calloc(sizeof(ShapeStroke), 1));
+ stroke->width = width;
+ flag |= RenderUpdateFlag::Stroke;
+
+ return true;
+ }
+
+ bool strokeCap(StrokeCap cap)
+ {
+ if (!stroke) stroke = static_cast<ShapeStroke*>(calloc(sizeof(ShapeStroke), 1));
+ stroke->cap = cap;
+ flag |= RenderUpdateFlag::Stroke;
+
+ return true;
+ }
+
+ bool strokeJoin(StrokeJoin join)
+ {
+ if (!stroke) stroke = static_cast<ShapeStroke*>(calloc(sizeof(ShapeStroke), 1));
+ stroke->join = join;
+ flag |= RenderUpdateFlag::Stroke;
+
+ return true;
+ }
+
+ bool strokeColor(uint8_t r, uint8_t g, uint8_t b, uint8_t a)
+ {
+ if (!stroke) stroke = static_cast<ShapeStroke*>(calloc(sizeof(ShapeStroke), 1));
+ if (stroke->fill) {
+ delete(stroke->fill);
+ stroke->fill = nullptr;
+ flag |= RenderUpdateFlag::GradientStroke;
+ }
+
+ stroke->color[0] = r;
+ stroke->color[1] = g;
+ stroke->color[2] = b;
+ stroke->color[3] = a;
+
+ flag |= RenderUpdateFlag::Stroke;
+
+ return true;
+ }
+
+ Result strokeFill(unique_ptr<Fill> f)
+ {
+ auto p = f.release();
+ if (!p) return Result::MemoryCorruption;
+
+ if (!stroke) stroke = static_cast<ShapeStroke*>(calloc(sizeof(ShapeStroke), 1));
+ if (stroke->fill && stroke->fill != p) delete(stroke->fill);
+ stroke->fill = p;
+
+ flag |= RenderUpdateFlag::Stroke;
+ flag |= RenderUpdateFlag::GradientStroke;
+
+ return Result::Success;
+ }
+
+ bool strokeDash(const float* pattern, uint32_t cnt)
+ {
+ //Reset dash
+ if (!pattern && cnt == 0) {
+ free(stroke->dashPattern);
+ stroke->dashPattern = nullptr;
+ } else {
+ if (!stroke) stroke = static_cast<ShapeStroke*>(calloc(sizeof(ShapeStroke), 1));
+ if (stroke->dashCnt != cnt) {
+ free(stroke->dashPattern);
+ stroke->dashPattern = nullptr;
+ }
+ if (!stroke->dashPattern) {
+ stroke->dashPattern = static_cast<float*>(malloc(sizeof(float) * cnt));
+ if (!stroke->dashPattern) return false;
+ }
+ for (uint32_t i = 0; i < cnt; ++i) {
+ stroke->dashPattern[i] = pattern[i];
+ }
+ }
+ stroke->dashCnt = cnt;
+ flag |= RenderUpdateFlag::Stroke;
+
+ return true;
+ }
+
+ Paint* duplicate()
+ {
+ auto ret = Shape::gen();
+
+ auto dup = ret.get()->pImpl;
+ dup->rule = rule;
+
+ //Color
+ memcpy(dup->color, color, sizeof(color));
+ dup->flag = RenderUpdateFlag::Color;
+
+ //Path
+ dup->path.duplicate(&path);
+ dup->flag |= RenderUpdateFlag::Path;
+
+ //Stroke
+ if (stroke) {
+ dup->stroke = static_cast<ShapeStroke*>(calloc(sizeof(ShapeStroke), 1));
+ dup->stroke->copy(stroke);
+ dup->flag |= RenderUpdateFlag::Stroke;
+
+ if (stroke->fill)
+ dup->flag |= RenderUpdateFlag::GradientStroke;
+ }
+
+ //Fill
+ if (fill) {
+ dup->fill = fill->duplicate();
+ dup->flag |= RenderUpdateFlag::Gradient;
+ }
+
+ return ret.release();
+ }
+
+ Iterator* iterator()
+ {
+ return nullptr;
+ }
+};
+
+#endif //_TVG_SHAPE_IMPL_H_
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