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add LayerDrawable::LayerState::getOpacity

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This commit is contained in:
侯歌 2024-05-25 15:12:24 +08:00
parent 266acaa448
commit b7d9b87c09
2 changed files with 46 additions and 13 deletions
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54
src/gui/drawables/layerdrawable.cc
View File

@ -144,11 +144,46 @@ int LayerDrawable::LayerState::getChangingConfigurations()const{
return mChangingConfigurations | mChildrenChangingConfigurations;
}
int LayerDrawable::LayerState::getOpacity(){
if (mCheckedOpacity) {
return mOpacity;
}
// Seek to the first non-null drawable.
int firstIndex = -1;
const size_t N = mChildren.size();
for (int i = 0; i < N; i++) {
if (mChildren[i]->mDrawable) {
firstIndex = i;
break;
}
}
int op;
if (firstIndex >= 0) {
op = mChildren[firstIndex]->mDrawable->getOpacity();
} else {
op = PixelFormat::TRANSPARENT;
}
// Merge all remaining non-null drawables.
for (int i = firstIndex + 1; i < N; i++) {
Drawable* dr = mChildren[i]->mDrawable;
if (dr != nullptr) {
op = Drawable::resolveOpacity(op, dr->getOpacity());
}
}
mOpacity = op;
mCheckedOpacity = true;
return op;
}
bool LayerDrawable::LayerState::isStateful()const{
bool isStateful = false;
for (auto child:mChildren) {
Drawable*dr=child->mDrawable;
if (dr != nullptr && dr->isStateful()) {
Drawable*dr = child->mDrawable;
if (dr && dr->isStateful()) {
isStateful = true;
break;
}
@ -165,7 +200,7 @@ bool LayerDrawable::LayerState::hasFocusStateSpecified()const{
return false;
}
bool LayerDrawable::LayerState::canConstantState() {
bool LayerDrawable::LayerState::canConstantState() const{
for (auto child:mChildren) {
Drawable* dr = child->mDrawable;
if (dr && dr->getConstantState() == nullptr) {
@ -940,12 +975,12 @@ int LayerDrawable::getOpacity() {
if (mLayerState->mOpacityOverride != PixelFormat::UNKNOWN) {
return mLayerState->mOpacityOverride;
}
return mLayerState->mOpacity;//getOpacity();
return mLayerState->getOpacity();
}
Drawable* LayerDrawable::getFirstNonNullDrawable()const{
for(auto child:mLayerState->mChildren){
Drawable*dr=child->mDrawable;
Drawable*dr = child->mDrawable;
if(dr)return dr;
}
return nullptr;
@ -955,10 +990,8 @@ LayerDrawable*LayerDrawable::mutate(){
if (!mMutated && Drawable::mutate() == this) {
mLayerState = createConstantState(mLayerState.get(),nullptr);
for (auto child:mLayerState->mChildren) {
Drawable*dr=child->mDrawable;
if (dr != nullptr) {
dr->mutate();
}
Drawable*dr = child->mDrawable;
if (dr)dr->mutate();
}
mMutated = true;
}
@ -970,8 +1003,7 @@ void LayerDrawable::clearMutated() {
for (auto child:mLayerState->mChildren) {
Drawable* dr = child->mDrawable;
if (dr)
dr->clearMutated();
if (dr)dr->clearMutated();
}
mMutated = false;
}

3
src/gui/drawables/layerdrawable.h
View File

@ -47,9 +47,10 @@ protected:
~LayerState();
LayerDrawable*newDrawable()override;
int getChangingConfigurations()const override;
int getOpacity();
bool isStateful()const;
bool hasFocusStateSpecified()const;
bool canConstantState();
bool canConstantState()const;
void invalidateCache();
void setDensity(int targetDensity);
virtual void onDensityChanged(int sourceDensity, int targetDensity);