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make numberpicker's textgradient compatible with fadingedge

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This commit is contained in:
houzh 2023-09-21 21:29:16 +08:00
parent 3690137d1a
commit a1691836c9
2 changed files with 29 additions and 6 deletions
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27
src/gui/widget/numberpicker.cc
View File

@ -1024,8 +1024,29 @@ void NumberPicker::onDraw(Canvas&canvas){
canvas.clip();
}
}
canvas.set_color(mTextColor);
if( mTextColor != mTextColor2 ){
if( mPat == nullptr ) {
Color c1(mTextColor), c2(mTextColor2);
CycleInterpolator ci(0.5f);
if(isHorizontalMode())
mPat = Cairo::LinearGradient::create(0/*x + mSelectorElementSize/2*/,0,/*x + mSelectorElementSize/2 +*/ getWidth(),0);
else
mPat = Cairo::LinearGradient::create(0,0/*y + mSelectorElementSize/2*/,0,/*y + mSelectorElementSize/2 +*/ getHeight());
const int cStops = mSelectorIndices.size()*3;
for(int i = 0; i < cStops ;i++){
const float offset = (i<cStops/2)?sin(M_PI*i/(cStops-1))/2.f:(1.f+sin(M_PI*i/(cStops-1))/2.f);//float(i)/cStops;
const float fraction = ci.getInterpolation(offset);
mPat->add_color_stop_rgba(offset,lerp(c2.red(),c1.red(),fraction),
lerp(c2.green(),c1.green(),fraction),
lerp(c2.blue(),c1.blue(),fraction),
std::abs(lerp(c2.alpha(),c1.alpha(),fraction)));
LOGV("[%d] offset=%.2f/%f fraction=%f alpha=%f",i,float(i)/cStops,offset,fraction,lerp(c2.alpha(),c1.alpha(),fraction));
}
}
canvas.set_source(mPat);
}else{
canvas.set_color(mTextColor);
}
canvas.set_font_size(mTextSize);
// draw the selector wheel
std::vector<int>& selectorIndices = mSelectorIndices;
@ -1330,6 +1351,8 @@ void NumberPicker::initializeSelectorWheel(){
}
void NumberPicker::initializeFadingEdges(){
if(mTextColor!=mTextColor2)
return;
if(isHorizontalMode()){
setHorizontalFadingEdgeEnabled(true);
setVerticalFadingEdgeEnabled(false);

8
src/gui/widget/numberpicker.h
View File

@ -53,7 +53,7 @@ private:
bool mComputeMaxWidth;
int mTextSize,mTextSize2;
int mSelectedTextSize;
int mTextColor;
int mTextColor,mTextColor2;
int mSelectedTextColor;
int mSelectorTextGapWidth;
int mSelectorTextGapHeight;
@ -113,10 +113,10 @@ private:
int mLastHoveredChildVirtualViewId;
bool mIncrementVirtualButtonPressed;
bool mDecrementVirtualButtonPressed;
int mLastHandledDownDpadKeyCode = -1;
int mLastHandledDownDpadKeyCode;
bool mHideWheelUntilFocused;
bool mWrapSelectorWheelPreferred=true;
bool mWrapSelectorWheelPreferred;
Cairo::RefPtr<Cairo::LinearGradient>mPat;
//PressedStateHelper's members
Runnable mPressedStateHelpers;
int mPSHManagedButton;