void ScrollbarThemeChromiumLinux::paintThumb(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect)
{
const bool hovered = scrollbar->hoveredPart() == ThumbPart;
const int midx = rect.x() + rect.width() / 2;
const int midy = rect.y() + rect.height() / 2;
const bool vertical = scrollbar->orientation() == VerticalScrollbar;
SkCanvas* const canvas = gc->platformContext()->canvas();
SkScalar thumb[3];
SkColorToHSV(hovered
? PlatformThemeChromiumGtk::thumbActiveColor()
: PlatformThemeChromiumGtk::thumbInactiveColor(),
thumb);
SkPaint paint;
paint.setColor(PlatformThemeChromiumGtk::saturateAndBrighten(thumb, 0, 0.02));
SkIRect skrect;
if (vertical)
skrect.set(rect.x(), rect.y(), midx + 1, rect.y() + rect.height());
else
skrect.set(rect.x(), rect.y(), rect.x() + rect.width(), midy + 1);
canvas->drawIRect(skrect, paint);
paint.setColor(PlatformThemeChromiumGtk::saturateAndBrighten(thumb, 0, -0.02));
if (vertical)
skrect.set(midx + 1, rect.y(), rect.x() + rect.width(), rect.y() + rect.height());
else
skrect.set(rect.x(), midy + 1, rect.x() + rect.width(), rect.y() + rect.height());
canvas->drawIRect(skrect, paint);
SkScalar track[3];
SkColorToHSV(PlatformThemeChromiumGtk::trackColor(), track);
paint.setColor(PlatformThemeChromiumGtk::outlineColor(track, thumb));
drawBox(canvas, rect, paint);
if (rect.height() > 10 && rect.width() > 10) {
const int grippyHalfWidth = 2;
const int interGrippyOffset = 3;
if (vertical) {
drawHorizLine(canvas, midx - grippyHalfWidth, midx + grippyHalfWidth, midy - interGrippyOffset, paint);
drawHorizLine(canvas, midx - grippyHalfWidth, midx + grippyHalfWidth, midy, paint);
drawHorizLine(canvas, midx - grippyHalfWidth, midx + grippyHalfWidth, midy + interGrippyOffset, paint);
} else {
drawVertLine(canvas, midx - interGrippyOffset, midy - grippyHalfWidth, midy + grippyHalfWidth, paint);
drawVertLine(canvas, midx, midy - grippyHalfWidth, midy + grippyHalfWidth, paint);
drawVertLine(canvas, midx + interGrippyOffset, midy - grippyHalfWidth, midy + grippyHalfWidth, paint);
}
}
}
void ScrollbarThemeChromiumLinux::paintTrackPiece(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect, ScrollbarPart partType)
{
SkCanvas* const canvas = gc->platformContext()->canvas();
SkPaint paint;
SkIRect skrect;
skrect.set(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() + rect.height());
SkScalar trackHSV[3];
SkColorToHSV(PlatformThemeChromiumGtk::trackColor(), trackHSV);
paint.setColor(PlatformThemeChromiumGtk::saturateAndBrighten(trackHSV, 0, 0));
canvas->drawIRect(skrect, paint);
SkScalar thumbHSV[3];
SkColorToHSV(PlatformThemeChromiumGtk::thumbInactiveColor(),
thumbHSV);
paint.setColor(PlatformThemeChromiumGtk::outlineColor(trackHSV, thumbHSV));
drawBox(canvas, rect, paint);
}
void PlatformThemeChromiumLinux::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);
}
