diff options
author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
---|---|---|
committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /WebCore/platform/chromium/PlatformThemeChromiumGtk.cpp | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'WebCore/platform/chromium/PlatformThemeChromiumGtk.cpp')
-rw-r--r-- | WebCore/platform/chromium/PlatformThemeChromiumGtk.cpp | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/WebCore/platform/chromium/PlatformThemeChromiumGtk.cpp b/WebCore/platform/chromium/PlatformThemeChromiumGtk.cpp deleted file mode 100644 index 6529482..0000000 --- a/WebCore/platform/chromium/PlatformThemeChromiumGtk.cpp +++ /dev/null @@ -1,221 +0,0 @@ -/* - * Copyright (C) 2010 Google Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" -#include "PlatformThemeChromiumGtk.h" - -namespace WebCore { - -unsigned PlatformThemeChromiumGtk::s_thumbInactiveColor = 0xeaeaea; -unsigned PlatformThemeChromiumGtk::s_thumbActiveColor = 0xf4f4f4; -unsigned PlatformThemeChromiumGtk::s_trackColor = 0xd3d3d3; - -void PlatformThemeChromiumGtk::setScrollbarColors( - SkColor inactiveColor, SkColor activeColor, SkColor trackColor) -{ - s_thumbInactiveColor = inactiveColor; - s_thumbActiveColor = activeColor; - s_trackColor = trackColor; -} - -static SkScalar clamp(SkScalar value, SkScalar min, SkScalar max) -{ - return std::min(std::max(value, min), max); -} - -SkColor PlatformThemeChromiumGtk::saturateAndBrighten(const SkScalar hsv[3], SkScalar saturateAmount, SkScalar brightenAmount) -{ - SkScalar color[3]; - color[0] = hsv[0]; - color[1] = clamp(hsv[1] + saturateAmount, 0.0, 1.0); - color[2] = clamp(hsv[2] + brightenAmount, 0.0, 1.0); - return SkHSVToColor(color); -} - -SkColor PlatformThemeChromiumGtk::outlineColor(const SkScalar hsv1[3], const SkScalar hsv2[3]) -{ - // GTK Theme engines have way too much control over the layout of - // the scrollbar. We might be able to more closely approximate its - // look-and-feel, if we sent whole images instead of just colors - // from the browser to the renderer. But even then, some themes - // would just break. - // - // So, instead, we don't even try to 100% replicate the look of - // the native scrollbar. We render our own version, but we make - // sure to pick colors that blend in nicely with the system GTK - // theme. In most cases, we can just sample a couple of pixels - // from the system scrollbar and use those colors to draw our - // scrollbar. - // - // This works fine for the track color and the overall thumb - // color. But it fails spectacularly for the outline color used - // around the thumb piece. Not all themes have a clearly defined - // outline. For some of them it is partially transparent, and for - // others the thickness is very unpredictable. - // - // So, instead of trying to approximate the system theme, we - // instead try to compute a reasonable looking choice based on the - // known color of the track and the thumb piece. This is difficult - // when trying to deal both with high- and low-contrast themes, - // and both with positive and inverted themes. - // - // The following code has been tested to look OK with all of the - // default GTK themes. - SkScalar minDiff = clamp((hsv1[1] + hsv2[1]) * 1.2, 0.28, 0.5); - SkScalar diff = clamp(fabs(hsv1[2] - hsv2[2]) / 2, minDiff, 0.5); - - if (hsv1[2] + hsv2[2] > 1.0) - diff = -diff; - - return saturateAndBrighten(hsv2, -0.2, diff); -} - -void PlatformThemeChromiumGtk::paintArrowButton(GraphicsContext* gc, const IntRect& rect, ArrowDirection direction, ControlStates states) -{ - SkCanvas* const canvas = gc->platformContext()->canvas(); - int widthMiddle, lengthMiddle; - SkPaint paint; - if (direction == North || direction == South) { - widthMiddle = rect.width() / 2 + 1; - lengthMiddle = rect.height() / 2 + 1; - } else { - lengthMiddle = rect.width() / 2 + 1; - widthMiddle = rect.height() / 2 + 1; - } - - // Calculate button color. - SkScalar trackHSV[3]; - SkColorToHSV(trackColor(), trackHSV); - SkColor buttonColor = saturateAndBrighten(trackHSV, 0, 0.2); - SkColor backgroundColor = buttonColor; - if (states & PressedState) { - SkScalar buttonHSV[3]; - SkColorToHSV(buttonColor, buttonHSV); - buttonColor = saturateAndBrighten(buttonHSV, 0, -0.1); - } else if (states & HoverState) { - SkScalar buttonHSV[3]; - SkColorToHSV(buttonColor, buttonHSV); - buttonColor = saturateAndBrighten(buttonHSV, 0, 0.05); - } - - SkIRect skrect; - skrect.set(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() + rect.height()); - // Paint the background (the area visible behind the rounded corners). - paint.setColor(backgroundColor); - canvas->drawIRect(skrect, paint); - - // Paint the button's outline and fill the middle - SkPath outline; - switch (direction) { - case North: - outline.moveTo(rect.x() + 0.5, rect.y() + rect.height() + 0.5); - outline.rLineTo(0, -(rect.height() - 2)); - outline.rLineTo(2, -2); - outline.rLineTo(rect.width() - 5, 0); - outline.rLineTo(2, 2); - outline.rLineTo(0, rect.height() - 2); - break; - case South: - outline.moveTo(rect.x() + 0.5, rect.y() - 0.5); - outline.rLineTo(0, rect.height() - 2); - outline.rLineTo(2, 2); - outline.rLineTo(rect.width() - 5, 0); - outline.rLineTo(2, -2); - outline.rLineTo(0, -(rect.height() - 2)); - break; - case East: - outline.moveTo(rect.x() - 0.5, rect.y() + 0.5); - outline.rLineTo(rect.width() - 2, 0); - outline.rLineTo(2, 2); - outline.rLineTo(0, rect.height() - 5); - outline.rLineTo(-2, 2); - outline.rLineTo(-(rect.width() - 2), 0); - break; - case West: - outline.moveTo(rect.x() + rect.width() + 0.5, rect.y() + 0.5); - outline.rLineTo(-(rect.width() - 2), 0); - outline.rLineTo(-2, 2); - outline.rLineTo(0, rect.height() - 5); - outline.rLineTo(2, 2); - outline.rLineTo(rect.width() - 2, 0); - break; - } - outline.close(); - - paint.setStyle(SkPaint::kFill_Style); - paint.setColor(buttonColor); - canvas->drawPath(outline, paint); - - paint.setAntiAlias(true); - paint.setStyle(SkPaint::kStroke_Style); - SkScalar thumbHSV[3]; - SkColorToHSV(thumbInactiveColor(), thumbHSV); - paint.setColor(outlineColor(trackHSV, thumbHSV)); - canvas->drawPath(outline, paint); - - // If the button is disabled or read-only, the arrow is drawn with the outline color. - if (states & EnabledState && !(states & ReadOnlyState)) - paint.setColor(SK_ColorBLACK); - - paint.setAntiAlias(false); - paint.setStyle(SkPaint::kFill_Style); - - SkPath path; - // The constants in this block of code are hand-tailored to produce good - // looking arrows without anti-aliasing. - switch (direction) { - case North: - path.moveTo(rect.x() + widthMiddle - 4, rect.y() + lengthMiddle + 2); - path.rLineTo(7, 0); - path.rLineTo(-4, -4); - break; - case South: - path.moveTo(rect.x() + widthMiddle - 4, rect.y() + lengthMiddle - 3); - path.rLineTo(7, 0); - path.rLineTo(-4, 4); - break; - case East: - path.moveTo(rect.x() + lengthMiddle - 3, rect.y() + widthMiddle - 4); - path.rLineTo(0, 7); - path.rLineTo(4, -4); - break; - case West: - path.moveTo(rect.x() + lengthMiddle + 1, rect.y() + widthMiddle - 5); - path.rLineTo(0, 9); - path.rLineTo(-4, -4); - break; - } - path.close(); - - canvas->drawPath(path, paint); -} - -} // namespace WebCore - |