diff options
| author | Tomaž Vajngerl <tomaz.vajngerl@collabora.co.uk> | 2019-11-04 18:36:51 +0100 |
|---|---|---|
| committer | Tomaž Vajngerl <quikee@gmail.com> | 2019-11-08 12:09:48 +0100 |
| commit | 389c8239c93663fa5546b2f0227a118a3ad091bf (patch) | |
| tree | 283ca215c088c682aeb1d492d6f5b7be21921965 /vcl/headless | |
| parent | 456300d4fbea0f27453973b50d148753d0315b80 (diff) | |
widget theme: Gradient support when drawing widgets
Change-Id: I29239348e36e4963d9708a22ac649b2b1d68bf02
Reviewed-on: https://gerrit.libreoffice.org/82207
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Diffstat (limited to 'vcl/headless')
| -rw-r--r-- | vcl/headless/svpgdi.cxx | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/vcl/headless/svpgdi.cxx b/vcl/headless/svpgdi.cxx index 5c1f0daab194..57f66d4fabf6 100644 --- a/vcl/headless/svpgdi.cxx +++ b/vcl/headless/svpgdi.cxx @@ -32,6 +32,7 @@ #include <o3tl/safeint.hxx> #include <vcl/BitmapTools.hxx> #include <vcl/sysdata.hxx> +#include <vcl/gradient.hxx> #include <config_cairo_canvas.h> #include <basegfx/numeric/ftools.hxx> #include <basegfx/range/b2drange.hxx> @@ -1494,6 +1495,39 @@ bool SvpSalGraphics::drawPolyPolygon( return true; } +bool SvpSalGraphics::implDrawGradient(basegfx::B2DPolyPolygon const & rPolyPolygon, SalGradient const & rGradient) +{ + cairo_t* cr = getCairoContext(true); + clipRegion(cr); + + basegfx::B2DHomMatrix rObjectToDevice; + + for (auto const & rPolygon : rPolyPolygon) + AddPolygonToPath(cr, rPolygon, rObjectToDevice, !getAntiAliasB2DDraw(), false); + + cairo_pattern_t* pattern; + pattern = cairo_pattern_create_linear(rGradient.maPoint1.getX(), rGradient.maPoint1.getY(), rGradient.maPoint2.getX(), rGradient.maPoint2.getY()); + + for (SalGradientStop const & rStop : rGradient.maStops) + { + double r = rStop.maColor.GetRed() / 255.0; + double g = rStop.maColor.GetGreen() / 255.0; + double b = rStop.maColor.GetBlue() / 255.0; + double a = (0xFF - rStop.maColor.GetTransparency()) / 255.0; + double offset = rStop.mfOffset; + + cairo_pattern_add_color_stop_rgba(pattern, offset, r, g, b, a); + } + cairo_set_source(cr, pattern); + + basegfx::B2DRange extents = getClippedFillDamage(cr); + cairo_fill_preserve(cr); + + releaseCairoContext(cr, true, extents); + + return true; +} + void SvpSalGraphics::applyColor(cairo_t *cr, Color aColor, double fTransparency) { if (cairo_surface_get_content(m_pSurface) == CAIRO_CONTENT_COLOR_ALPHA) |