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Try to make rulers draw right on Cairo as well as OpenGL. 

Fixes https://gitlab.com/kicad/code/kicad/issues/5654
This commit is contained in:
Jeff Young 2020-10-02 13:47:23 +01:00
parent 732f588d83
commit 0052954046
2 changed files with 38 additions and 25 deletions
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59
common/preview_items/ruler_item.cpp
View File

@ -37,14 +37,26 @@ static const double maxTickDensity = 10.0; // min pixels between tick mark
static const double midTickLengthFactor = 1.5;
static const double majorTickLengthFactor = 2.5;
// We need a pair of layers for the graphics and drop-shadows, but it's probably not
// worth adding more layers to the enum.
#define LAYER_RULER LAYER_SELECT_OVERLAY
#define LAYER_RULER_SHADOWS LAYER_GP_OVERLAY
/*
* It would be nice to know why Cairo seems to have an opposite layer order from GAL, but
* only when drawing RULER_ITEMs (the TWO_POINT_ASSISTANT and ARC_ASSISTANT are immune from
* this issue).
*
* Until then, this egregious hack...
*/
static int getShadowLayer( KIGFX::GAL* aGal )
{
if( aGal->IsCairoEngine() )
return LAYER_SELECT_OVERLAY;
else
return LAYER_GP_OVERLAY;
}
static void drawCursorStrings( int aLayer, KIGFX::VIEW* aView, const VECTOR2D& aCursor,
const VECTOR2D& aRulerVec, EDA_UNITS aUnits )
static void drawCursorStrings( KIGFX::VIEW* aView, const VECTOR2D& aCursor,
const VECTOR2D& aRulerVec, EDA_UNITS aUnits,
bool aDrawingDropShadows )
{
// draw the cursor labels
std::vector<wxString> cursorStrings;
@ -59,15 +71,15 @@ static void drawCursorStrings( int aLayer, KIGFX::VIEW* aView, const VECTOR2D& a
EDA_UNITS::DEGREES ) );
auto temp = aRulerVec;
DrawTextNextToCursor( aView, aCursor, -temp, cursorStrings, aLayer == LAYER_RULER_SHADOWS );
DrawTextNextToCursor( aView, aCursor, -temp, cursorStrings, aDrawingDropShadows );
}
static double getTickLineWidth( const TEXT_DIMS& textDims, int aLayer )
static double getTickLineWidth( const TEXT_DIMS& textDims, bool aDrawingDropShadows )
{
double width = textDims.StrokeWidth * 0.8;
if( aLayer == LAYER_RULER_SHADOWS )
if( aDrawingDropShadows )
width += textDims.ShadowWidth;
return width;
@ -131,8 +143,8 @@ static TICK_FORMAT getTickFormatForScale( double aScale, double& aTickSpace, EDA
* @param aLine line vector
* @param aMinorTickLen length of minor ticks in IU
*/
void drawTicksAlongLine( int aLayer, KIGFX::GAL* aGal, const VECTOR2D& aOrigin,
const VECTOR2D& aLine, double aMinorTickLen, EDA_UNITS aUnits )
void drawTicksAlongLine( KIGFX::GAL* aGal, const VECTOR2D& aOrigin, const VECTOR2D& aLine,
double aMinorTickLen, EDA_UNITS aUnits, bool aDrawingDropShadows )
{
VECTOR2D tickLine = aLine.Rotate( -M_PI_2 );
double tickSpace;
@ -147,9 +159,8 @@ void drawTicksAlongLine( int aLayer, KIGFX::GAL* aGal, const VECTOR2D& aOrigin,
double labelAngle = -tickLine.Angle();
double textOffset = 0;
if( aLayer == LAYER_RULER_SHADOWS )
if( aDrawingDropShadows )
{
// Drawing drop shadows
textOffset = textDims.ShadowWidth;
textThickness += 2 * textDims.ShadowWidth;
}
@ -208,8 +219,8 @@ void drawTicksAlongLine( int aLayer, KIGFX::GAL* aGal, const VECTOR2D& aOrigin,
* @param aTickLen length of ticks in IU
* @param aNumDivisions number of parts to divide the line into
*/
void drawBacksideTicks( int aLayer, KIGFX::GAL* aGal, const VECTOR2D& aOrigin,
const VECTOR2D& aLine, double aTickLen, int aNumDivisions )
void drawBacksideTicks( KIGFX::GAL* aGal, const VECTOR2D& aOrigin, const VECTOR2D& aLine,
double aTickLen, int aNumDivisions, bool aDrawingDropShadows )
{
const double backTickSpace = aLine.EuclideanNorm() / aNumDivisions;
const VECTOR2D backTickVec = aLine.Rotate( M_PI_2 ).Resize( aTickLen );
@ -218,7 +229,7 @@ void drawBacksideTicks( int aLayer, KIGFX::GAL* aGal, const VECTOR2D& aOrigin,
for( int i = 0; i < aNumDivisions + 1; ++i )
{
const VECTOR2D backTickPos = aOrigin + aLine.Resize( backTickSpace * i );
aGal->SetLineWidth( getTickLineWidth( textDims, aLayer ) );
aGal->SetLineWidth( getTickLineWidth( textDims, aDrawingDropShadows ) );
aGal->DrawLine( backTickPos, backTickPos + backTickVec );
}
}
@ -248,8 +259,8 @@ const BOX2I RULER_ITEM::ViewBBox() const
void RULER_ITEM::ViewGetLayers( int aLayers[], int& aCount ) const
{
aLayers[0] = LAYER_RULER;
aLayers[1] = LAYER_RULER_SHADOWS;
aLayers[0] = LAYER_SELECT_OVERLAY;
aLayers[1] = LAYER_GP_OVERLAY;
aCount = 2;
}
@ -258,6 +269,7 @@ void RULER_ITEM::ViewDraw( int aLayer, KIGFX::VIEW* aView ) const
{
KIGFX::GAL* gal = aView->GetGAL();
RENDER_SETTINGS* rs = aView->GetPainter()->GetSettings();
bool drawingDropShadows = ( aLayer == getShadowLayer( gal ) );
gal->PushDepth();
gal->SetLayerDepth( gal->GetMinDepth() );
@ -271,26 +283,27 @@ void RULER_ITEM::ViewDraw( int aLayer, KIGFX::VIEW* aView ) const
gal->SetTextMirrored( false );
gal->SetStrokeColor( rs->GetLayerColor( LAYER_AUX_ITEMS ) );
if( aLayer == LAYER_RULER_SHADOWS )
if( drawingDropShadows )
gal->SetStrokeColor( GetShadowColor( gal->GetStrokeColor() ) );
gal->ResetTextAttributes();
TEXT_DIMS textDims = SetConstantGlyphHeight( gal );
// draw the main line from the origin to cursor
gal->SetLineWidth( getTickLineWidth( textDims, aLayer ) );
gal->SetLineWidth( getTickLineWidth( textDims, drawingDropShadows ) );
gal->DrawLine( origin, end );
VECTOR2D rulerVec( end - origin );
drawCursorStrings( aLayer, aView, end, rulerVec, m_userUnits );
drawCursorStrings( aView, end, rulerVec, m_userUnits, drawingDropShadows );
// basic tick size
const double minorTickLen = 5.0 / gal->GetWorldScale();
const double majorTickLen = minorTickLen * majorTickLengthFactor;
drawTicksAlongLine( aLayer, gal, origin, rulerVec, minorTickLen, m_userUnits );
drawTicksAlongLine( gal, origin, rulerVec, minorTickLen, m_userUnits, drawingDropShadows );
drawBacksideTicks( aLayer, gal, origin, rulerVec, minorTickLen * majorTickLengthFactor, 2 );
drawBacksideTicks( gal, origin, rulerVec, majorTickLen, 2, drawingDropShadows );
// draw the back of the origin "crosshair"
gal->DrawLine( origin, origin + rulerVec.Resize( -minorTickLen * midTickLengthFactor ) );

4
include/preview_items/two_point_assistant.h
View File

@ -57,8 +57,8 @@ namespace PREVIEW
void ViewGetLayers( int aLayers[], int& aCount ) const override
{
aLayers[0] = LAYER_GP_OVERLAY; // Drop shadows
aLayers[1] = LAYER_SELECT_OVERLAY; // Assitant graphics
aLayers[0] = LAYER_GP_OVERLAY;
aLayers[1] = LAYER_SELECT_OVERLAY;
aCount = 2;
}