1/*
2 * Copyright (c) 2020 - 2023 the ThorVG project. All rights reserved.
3
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10
11 * The above copyright notice and this permission notice shall be included in all
12 * copies or substantial portions of the Software.
13
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#ifndef _TVG_PAINT_H_
24#define _TVG_PAINT_H_
25
26#include "tvgRender.h"
27
28
29namespace tvg
30{
31 enum ContextFlag : uint8_t {Invalid = 0, FastTrack = 1};
32
33 struct Iterator
34 {
35 virtual ~Iterator() {}
36 virtual const Paint* next() = 0;
37 virtual uint32_t count() = 0;
38 virtual void begin() = 0;
39 };
40
41 struct StrategyMethod
42 {
43 virtual ~StrategyMethod() {}
44
45 virtual bool dispose(RenderMethod& renderer) = 0;
46 virtual void* update(RenderMethod& renderer, const RenderTransform* transform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag pFlag, bool clipper) = 0; //Return engine data if it has.
47 virtual bool render(RenderMethod& renderer) = 0;
48 virtual bool bounds(float* x, float* y, float* w, float* h) = 0;
49 virtual RenderRegion bounds(RenderMethod& renderer) const = 0;
50 virtual Paint* duplicate() = 0;
51 virtual Iterator* iterator() = 0;
52 };
53
54 struct Composite
55 {
56 Paint* target;
57 Paint* source;
58 CompositeMethod method;
59 };
60
61 struct Paint::Impl
62 {
63 StrategyMethod* smethod = nullptr;
64 RenderTransform* rTransform = nullptr;
65 Composite* compData = nullptr;
66 BlendMethod blendMethod = BlendMethod::Normal; //uint8_t
67 uint8_t renderFlag = RenderUpdateFlag::None;
68 uint8_t ctxFlag = ContextFlag::Invalid;
69 uint8_t id;
70 uint8_t opacity = 255;
71
72 ~Impl()
73 {
74 if (compData) {
75 delete(compData->target);
76 free(compData);
77 }
78 delete(smethod);
79 delete(rTransform);
80 }
81
82 void method(StrategyMethod* method)
83 {
84 smethod = method;
85 }
86
87 bool transform(const Matrix& m)
88 {
89 if (!rTransform) {
90 rTransform = new RenderTransform();
91 if (!rTransform) return false;
92 }
93 rTransform->override(m);
94 renderFlag |= RenderUpdateFlag::Transform;
95
96 return true;
97 }
98
99 Matrix* transform()
100 {
101 if (rTransform) {
102 rTransform->update();
103 return &rTransform->m;
104 }
105 return nullptr;
106 }
107
108 RenderRegion bounds(RenderMethod& renderer) const
109 {
110 return smethod->bounds(renderer);
111 }
112
113 bool dispose(RenderMethod& renderer)
114 {
115 if (compData) compData->target->pImpl->dispose(renderer);
116 return smethod->dispose(renderer);
117 }
118
119 Iterator* iterator()
120 {
121 return smethod->iterator();
122 }
123
124 bool composite(Paint* source, Paint* target, CompositeMethod method)
125 {
126 //Invalid case
127 if ((!target && method != CompositeMethod::None) || (target && method == CompositeMethod::None)) return false;
128
129 if (compData) {
130 delete(compData->target);
131 //Reset scenario
132 if (!target && method == CompositeMethod::None) {
133 free(compData);
134 compData = nullptr;
135 return true;
136 }
137 } else {
138 if (!target && method == CompositeMethod::None) return true;
139 compData = static_cast<Composite*>(calloc(1, sizeof(Composite)));
140 }
141 compData->target = target;
142 compData->source = source;
143 compData->method = method;
144 return true;
145 }
146
147 bool rotate(float degree);
148 bool scale(float factor);
149 bool translate(float x, float y);
150 bool bounds(float* x, float* y, float* w, float* h, bool transformed);
151 RenderData update(RenderMethod& renderer, const RenderTransform* pTransform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag pFlag, bool clipper = false);
152 bool render(RenderMethod& renderer);
153 Paint* duplicate();
154 };
155
156
157 template<class T>
158 struct PaintMethod : StrategyMethod
159 {
160 T* inst = nullptr;
161
162 PaintMethod(T* _inst) : inst(_inst) {}
163 ~PaintMethod() {}
164
165 bool bounds(float* x, float* y, float* w, float* h) override
166 {
167 return inst->bounds(x, y, w, h);
168 }
169
170 RenderRegion bounds(RenderMethod& renderer) const override
171 {
172 return inst->bounds(renderer);
173 }
174
175 bool dispose(RenderMethod& renderer) override
176 {
177 return inst->dispose(renderer);
178 }
179
180 RenderData update(RenderMethod& renderer, const RenderTransform* transform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag renderFlag, bool clipper) override
181 {
182 return inst->update(renderer, transform, clips, opacity, renderFlag, clipper);
183 }
184
185 bool render(RenderMethod& renderer) override
186 {
187 return inst->render(renderer);
188 }
189
190 Paint* duplicate() override
191 {
192 return inst->duplicate();
193 }
194
195 Iterator* iterator() override
196 {
197 return inst->iterator();
198 }
199 };
200}
201
202#endif //_TVG_PAINT_H_
203