1 /*
2 * Copyright (c) 2021-2025 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "rs_render_thread_util.h"
17
18 #include "platform/common/rs_log.h"
19 #ifdef ROSEN_OHOS
20 #include "bundle_mgr_interface.h"
21 #include "iservice_registry.h"
22 #include "system_ability_definition.h"
23 #endif
24
25 namespace OHOS {
26 namespace Rosen {
SrcRectScaleDown(Drawing::Rect & srcRect,const Drawing::Rect & localBounds)27 void RSRenderThreadUtil::SrcRectScaleDown(Drawing::Rect& srcRect, const Drawing::Rect& localBounds)
28 {
29 uint32_t newWidth = static_cast<uint32_t>(srcRect.GetWidth());
30 uint32_t newHeight = static_cast<uint32_t>(srcRect.GetHeight());
31 // Canvas is able to handle the situation when the window is out of screen, using bounds instead of dst.
32 uint32_t boundsWidth = static_cast<uint32_t>(localBounds.GetWidth());
33 uint32_t boundsHeight = static_cast<uint32_t>(localBounds.GetHeight());
34
35 uint32_t newWidthBoundsHeight = newWidth * boundsHeight;
36 uint32_t newHeightBoundsWidth = newHeight * boundsWidth;
37
38 if (newWidthBoundsHeight > newHeightBoundsWidth) {
39 newWidth = boundsWidth * newHeight / boundsHeight;
40 } else if (newWidthBoundsHeight < newHeightBoundsWidth) {
41 newHeight = boundsHeight * newWidth / boundsWidth;
42 } else {
43 return;
44 }
45
46 uint32_t currentWidth = static_cast<uint32_t>(srcRect.GetWidth());
47 uint32_t currentHeight = static_cast<uint32_t>(srcRect.GetHeight());
48 if (newWidth < currentWidth) {
49 // the crop is too wide
50 uint32_t dw = currentWidth - newWidth;
51 auto halfdw = dw / 2;
52 srcRect = Drawing::Rect(srcRect.GetLeft() + static_cast<int32_t>(halfdw), srcRect.GetTop(),
53 srcRect.GetLeft() + static_cast<int32_t>(halfdw) + static_cast<int32_t>(newWidth),
54 srcRect.GetTop() + srcRect.GetHeight());
55 } else {
56 // thr crop is too tall
57 uint32_t dh = currentHeight - newHeight;
58 auto halfdh = dh / 2;
59 srcRect = Drawing::Rect(srcRect.GetLeft(), srcRect.GetTop() + static_cast<int32_t>(halfdh),
60 srcRect.GetLeft() + srcRect.GetWidth(),
61 srcRect.GetTop() + static_cast<int32_t>(halfdh) + static_cast<int32_t>(newHeight));
62 }
63 }
64
SrcRectScaleFit(const Drawing::Rect & srcRect,Drawing::Rect & dstRect,const Drawing::Rect & localBounds)65 void RSRenderThreadUtil::SrcRectScaleFit(
66 const Drawing::Rect& srcRect, Drawing::Rect& dstRect, const Drawing::Rect& localBounds)
67 {
68 uint32_t srcWidth = static_cast<uint32_t>(srcRect.GetWidth());
69 uint32_t srcHeight = static_cast<uint32_t>(srcRect.GetHeight());
70 float newWidth = 0.0f;
71 float newHeight = 0.0f;
72 // Canvas is able to handle the situation when the window is out of screen, using bounds instead of dst.
73 uint32_t boundsWidth = static_cast<uint32_t>(localBounds.GetWidth());
74 uint32_t boundsHeight = static_cast<uint32_t>(localBounds.GetHeight());
75 if (boundsWidth == 0 || boundsHeight == 0 || srcWidth == 0 || srcHeight == 0) {
76 return;
77 }
78
79 if (srcWidth * boundsHeight > srcHeight * boundsWidth) {
80 newWidth = boundsWidth;
81 newHeight = srcHeight * newWidth / srcWidth;
82 } else if (srcWidth * boundsHeight < srcHeight * boundsWidth) {
83 newHeight = boundsHeight;
84 newWidth = newHeight * srcWidth / srcHeight;
85 } else {
86 newWidth = boundsWidth;
87 newHeight = boundsHeight;
88 }
89 newHeight = newHeight * srcHeight / boundsHeight;
90 newWidth = newWidth * srcWidth / boundsWidth;
91 if (newWidth < srcWidth) {
92 float halfdw = (srcWidth - newWidth) / 2;
93 dstRect = Drawing::Rect(srcRect.GetLeft() + halfdw, srcRect.GetTop(), srcRect.GetLeft() + halfdw + newWidth,
94 srcRect.GetTop() + srcRect.GetHeight());
95 } else if (newHeight < srcHeight) {
96 float halfdh = (srcHeight - newHeight) / 2;
97 dstRect = Drawing::Rect(srcRect.GetLeft(), srcRect.GetTop() + halfdh, srcRect.GetLeft() + srcRect.GetWidth(),
98 srcRect.GetTop() + halfdh + newHeight);
99 }
100 }
101 } // namespace Rosen
102 } // namespace OHOS