diff options
Diffstat (limited to 'Userland/Libraries/LibGfx/Painter.cpp')
| -rw-r--r-- | Userland/Libraries/LibGfx/Painter.cpp | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/Userland/Libraries/LibGfx/Painter.cpp b/Userland/Libraries/LibGfx/Painter.cpp index 3ff25202d3..f1d96e8e21 100644 --- a/Userland/Libraries/LibGfx/Painter.cpp +++ b/Userland/Libraries/LibGfx/Painter.cpp @@ -206,6 +206,10 @@ void Painter::fill_rect_with_checkerboard(const IntRect& a_rect, const IntSize& void Painter::fill_rect_with_gradient(Orientation orientation, const IntRect& a_rect, Color gradient_start, Color gradient_end) { + if (gradient_start == gradient_end) { + fill_rect(a_rect, gradient_start); + return; + } #ifdef NO_FPU return fill_rect(a_rect, gradient_start); @@ -222,23 +226,31 @@ void Painter::fill_rect_with_gradient(Orientation orientation, const IntRect& a_ const size_t dst_skip = m_target->pitch() / sizeof(RGBA32); float increment = (1.0 / ((rect.primary_size_for_orientation(orientation)))); + float alpha_increment = increment * ((float)gradient_end.alpha() - (float)gradient_start.alpha()); if (orientation == Orientation::Horizontal) { for (int i = clipped_rect.height() - 1; i >= 0; --i) { float c = offset * increment; + float c_alpha = gradient_start.alpha() + offset * alpha_increment; for (int j = 0; j < clipped_rect.width(); ++j) { - dst[j] = gamma_accurate_blend(gradient_start, gradient_end, c).value(); + auto color = gamma_accurate_blend(gradient_start, gradient_end, c); + color.set_alpha(c_alpha); + dst[j] = color.value(); + c_alpha += alpha_increment; c += increment; } dst += dst_skip; } } else { float c = offset * increment; + float c_alpha = gradient_start.alpha() + offset * alpha_increment; for (int i = clipped_rect.height() - 1; i >= 0; --i) { auto color = gamma_accurate_blend(gradient_start, gradient_end, c); + color.set_alpha(c_alpha); for (int j = 0; j < clipped_rect.width(); ++j) { dst[j] = color.value(); } + c_alpha += alpha_increment; c += increment; dst += dst_skip; } |