зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
3.5 KiB
C++
85 строки
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "ScrollbarDrawingAndroid.h"
|
|
|
|
#include "nsIFrame.h"
|
|
#include "nsNativeTheme.h"
|
|
#include "mozilla/StaticPrefs_widget.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::widget;
|
|
|
|
LayoutDeviceIntSize ScrollbarDrawingAndroid::GetMinimumWidgetSize(
|
|
nsPresContext* aPresContext, StyleAppearance aAppearance,
|
|
nsIFrame* aFrame) {
|
|
MOZ_ASSERT(nsNativeTheme::IsWidgetScrollbarPart(aAppearance));
|
|
auto size =
|
|
GetScrollbarSize(aPresContext, StyleScrollbarWidth::Auto, Overlay::Yes);
|
|
return LayoutDeviceIntSize{size, size};
|
|
}
|
|
|
|
template <typename PaintBackendData>
|
|
void ScrollbarDrawingAndroid::DoPaintScrollbarThumb(
|
|
PaintBackendData& aPaintData, const LayoutDeviceRect& aRect,
|
|
ScrollbarKind aScrollbarKind, nsIFrame* aFrame, const ComputedStyle& aStyle,
|
|
const ElementState& aElementState, const DocumentState& aDocumentState,
|
|
const Colors& aColors, const DPIRatio& aDpiRatio) {
|
|
// TODO(emilio): Maybe do like macOS and draw a stroke?
|
|
const auto color = ComputeScrollbarThumbColor(aFrame, aStyle, aElementState,
|
|
aDocumentState, aColors);
|
|
const bool horizontal = aScrollbarKind == ScrollbarKind::Horizontal;
|
|
|
|
// Draw the thumb rect centered in the scrollbar.
|
|
LayoutDeviceRect thumbRect(aRect);
|
|
if (horizontal) {
|
|
thumbRect.height *= 0.5f;
|
|
thumbRect.y += thumbRect.height * 0.5f;
|
|
} else {
|
|
thumbRect.width *= 0.5f;
|
|
thumbRect.x += thumbRect.width * 0.5f;
|
|
}
|
|
|
|
const LayoutDeviceCoord radius =
|
|
(horizontal ? thumbRect.height : thumbRect.width) / 2.0f;
|
|
ThemeDrawing::PaintRoundedRectWithRadius(aPaintData, thumbRect, color,
|
|
sRGBColor::White(0.0f), 0.0f,
|
|
radius / aDpiRatio, aDpiRatio);
|
|
}
|
|
|
|
bool ScrollbarDrawingAndroid::PaintScrollbarThumb(
|
|
DrawTarget& aDt, const LayoutDeviceRect& aRect,
|
|
ScrollbarKind aScrollbarKind, nsIFrame* aFrame, const ComputedStyle& aStyle,
|
|
const ElementState& aElementState, const DocumentState& aDocumentState,
|
|
const Colors& aColors, const DPIRatio& aDpiRatio) {
|
|
DoPaintScrollbarThumb(aDt, aRect, aScrollbarKind, aFrame, aStyle,
|
|
aElementState, aDocumentState, aColors, aDpiRatio);
|
|
return true;
|
|
}
|
|
|
|
bool ScrollbarDrawingAndroid::PaintScrollbarThumb(
|
|
WebRenderBackendData& aWrData, const LayoutDeviceRect& aRect,
|
|
ScrollbarKind aScrollbarKind, nsIFrame* aFrame, const ComputedStyle& aStyle,
|
|
const ElementState& aElementState, const DocumentState& aDocumentState,
|
|
const Colors& aColors, const DPIRatio& aDpiRatio) {
|
|
DoPaintScrollbarThumb(aWrData, aRect, aScrollbarKind, aFrame, aStyle,
|
|
aElementState, aDocumentState, aColors, aDpiRatio);
|
|
return true;
|
|
}
|
|
|
|
void ScrollbarDrawingAndroid::RecomputeScrollbarParams() {
|
|
uint32_t defaultSize = 6;
|
|
uint32_t overrideSize =
|
|
StaticPrefs::widget_non_native_theme_scrollbar_size_override();
|
|
if (overrideSize > 0) {
|
|
defaultSize = overrideSize;
|
|
}
|
|
ConfigureScrollbarSize(defaultSize);
|
|
// We make thin scrollbars as wide as auto ones because auto scrollbars on
|
|
// android are already thin enough.
|
|
ConfigureScrollbarSize(StyleScrollbarWidth::Thin, Overlay::Yes, defaultSize);
|
|
ConfigureScrollbarSize(StyleScrollbarWidth::Thin, Overlay::No, defaultSize);
|
|
}
|