| /** |
| * This file is part of the theme implementation for form controls in WebCore. |
| * |
| * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Computer, Inc. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "core/paint/ThemePainter.h" |
| |
| #include "core/frame/LocalFrameView.h" |
| #include "core/frame/UseCounter.h" |
| #include "core/html/forms/HTMLDataListElement.h" |
| #include "core/html/forms/HTMLDataListOptionsCollection.h" |
| #include "core/html/forms/HTMLInputElement.h" |
| #include "core/html/forms/HTMLOptionElement.h" |
| #include "core/html/parser/HTMLParserIdioms.h" |
| #include "core/html/shadow/ShadowElementNames.h" |
| #include "core/input_type_names.h" |
| #include "core/layout/LayoutTheme.h" |
| #include "core/layout/LayoutView.h" |
| #include "core/paint/PaintInfo.h" |
| #include "core/style/ComputedStyle.h" |
| #include "platform/Theme.h" |
| #include "platform/graphics/GraphicsContextStateSaver.h" |
| #include "platform/graphics/paint/PaintCanvas.h" |
| #include "public/platform/Platform.h" |
| #include "public/platform/WebFallbackThemeEngine.h" |
| #include "public/platform/WebRect.h" |
| |
| // The methods in this file are shared by all themes on every platform. |
| |
| namespace blink { |
| |
| namespace { |
| |
| WebFallbackThemeEngine::State GetWebFallbackThemeState(const Node* node) { |
| if (!LayoutTheme::IsEnabled(node)) |
| return WebFallbackThemeEngine::kStateDisabled; |
| if (LayoutTheme::IsPressed(node)) |
| return WebFallbackThemeEngine::kStatePressed; |
| if (LayoutTheme::IsHovered(node)) |
| return WebFallbackThemeEngine::kStateHover; |
| |
| return WebFallbackThemeEngine::kStateNormal; |
| } |
| |
| } // anonymous namespace |
| |
| ThemePainter::ThemePainter() = default; |
| |
| bool ThemePainter::Paint(const LayoutObject& o, |
| const PaintInfo& paint_info, |
| const IntRect& r) { |
| const Node* node = o.GetNode(); |
| const ComputedStyle& style = o.StyleRef(); |
| ControlPart part = o.StyleRef().Appearance(); |
| |
| if (LayoutTheme::GetTheme().ShouldUseFallbackTheme(style)) |
| return PaintUsingFallbackTheme(node, style, paint_info, r); |
| |
| if (part == kButtonPart && node) { |
| const Document& doc = node->GetDocument(); |
| UseCounter::Count(doc, WebFeature::kCSSValueAppearanceButtonRendered); |
| if (IsHTMLAnchorElement(node)) { |
| UseCounter::Count(doc, WebFeature::kCSSValueAppearanceButtonForAnchor); |
| } else if (IsHTMLButtonElement(node)) { |
| UseCounter::Count(doc, WebFeature::kCSSValueAppearanceButtonForButton); |
| } else if (IsHTMLInputElement(node) && |
| ToHTMLInputElement(node)->IsTextButton()) { |
| // Text buttons (type=button, reset, submit) has |
| // -webkit-appearance:push-button by default. |
| UseCounter::Count(doc, |
| WebFeature::kCSSValueAppearanceButtonForOtherButtons); |
| } |
| } |
| |
| // Call the appropriate paint method based off the appearance value. |
| switch (part) { |
| case kCheckboxPart: |
| return PaintCheckbox(node, o.GetDocument(), style, paint_info, r); |
| case kRadioPart: |
| return PaintRadio(node, o.GetDocument(), style, paint_info, r); |
| case kPushButtonPart: |
| case kSquareButtonPart: |
| case kButtonPart: |
| return PaintButton(node, o.GetDocument(), style, paint_info, r); |
| case kInnerSpinButtonPart: |
| return PaintInnerSpinButton(node, style, paint_info, r); |
| case kMenulistPart: |
| return PaintMenuList(node, o.GetDocument(), style, paint_info, r); |
| case kMeterPart: |
| return true; |
| case kProgressBarPart: |
| return PaintProgressBar(o, paint_info, r); |
| case kSliderHorizontalPart: |
| case kSliderVerticalPart: |
| return PaintSliderTrack(o, paint_info, r); |
| case kSliderThumbHorizontalPart: |
| case kSliderThumbVerticalPart: |
| return PaintSliderThumb(node, style, paint_info, r); |
| case kMediaEnterFullscreenButtonPart: |
| case kMediaExitFullscreenButtonPart: |
| case kMediaPlayButtonPart: |
| case kMediaOverlayPlayButtonPart: |
| case kMediaMuteButtonPart: |
| case kMediaToggleClosedCaptionsButtonPart: |
| case kMediaSliderPart: |
| case kMediaSliderThumbPart: |
| case kMediaVolumeSliderContainerPart: |
| case kMediaVolumeSliderPart: |
| case kMediaVolumeSliderThumbPart: |
| case kMediaTimeRemainingPart: |
| case kMediaCurrentTimePart: |
| case kMediaControlsBackgroundPart: |
| case kMediaCastOffButtonPart: |
| case kMediaOverlayCastOffButtonPart: |
| case kMediaTrackSelectionCheckmarkPart: |
| case kMediaClosedCaptionsIconPart: |
| case kMediaSubtitlesIconPart: |
| case kMediaOverflowMenuButtonPart: |
| case kMediaRemotingCastIconPart: |
| case kMediaDownloadIconPart: |
| return true; |
| case kMenulistButtonPart: |
| case kTextFieldPart: |
| case kTextAreaPart: |
| return true; |
| case kSearchFieldPart: |
| return PaintSearchField(node, style, paint_info, r); |
| case kSearchFieldCancelButtonPart: |
| return PaintSearchFieldCancelButton(o, paint_info, r); |
| default: |
| break; |
| } |
| |
| // We don't support the appearance, so let the normal background/border paint. |
| return true; |
| } |
| |
| bool ThemePainter::PaintBorderOnly(const Node* node, |
| const ComputedStyle& style, |
| const PaintInfo& paint_info, |
| const IntRect& r) { |
| // Call the appropriate paint method based off the appearance value. |
| switch (style.Appearance()) { |
| case kTextFieldPart: |
| if (node) { |
| UseCounter::Count(node->GetDocument(), |
| WebFeature::kCSSValueAppearanceTextFieldRendered); |
| if (auto* input = ToHTMLInputElementOrNull(node)) { |
| if (input->type() == InputTypeNames::search) { |
| UseCounter::Count( |
| node->GetDocument(), |
| WebFeature::kCSSValueAppearanceTextFieldForSearch); |
| } else if (input->IsTextField()) { |
| UseCounter::Count( |
| node->GetDocument(), |
| WebFeature::kCSSValueAppearanceTextFieldForTextField); |
| } |
| } |
| } |
| return PaintTextField(node, style, paint_info, r); |
| case kTextAreaPart: |
| return PaintTextArea(node, style, paint_info, r); |
| case kMenulistButtonPart: |
| case kSearchFieldPart: |
| case kListboxPart: |
| return true; |
| case kCheckboxPart: |
| case kRadioPart: |
| case kPushButtonPart: |
| case kSquareButtonPart: |
| case kButtonPart: |
| case kMenulistPart: |
| case kMeterPart: |
| case kProgressBarPart: |
| case kSliderHorizontalPart: |
| case kSliderVerticalPart: |
| case kSliderThumbHorizontalPart: |
| case kSliderThumbVerticalPart: |
| case kSearchFieldCancelButtonPart: |
| default: |
| break; |
| } |
| |
| return false; |
| } |
| |
| bool ThemePainter::PaintDecorations(const Node* node, |
| const Document& document, |
| const ComputedStyle& style, |
| const PaintInfo& paint_info, |
| const IntRect& r) { |
| // Call the appropriate paint method based off the appearance value. |
| switch (style.Appearance()) { |
| case kMenulistButtonPart: |
| return PaintMenuListButton(node, document, style, paint_info, r); |
| case kTextFieldPart: |
| case kTextAreaPart: |
| case kCheckboxPart: |
| case kRadioPart: |
| case kPushButtonPart: |
| case kSquareButtonPart: |
| case kButtonPart: |
| case kMenulistPart: |
| case kMeterPart: |
| case kProgressBarPart: |
| case kSliderHorizontalPart: |
| case kSliderVerticalPart: |
| case kSliderThumbHorizontalPart: |
| case kSliderThumbVerticalPart: |
| case kSearchFieldPart: |
| case kSearchFieldCancelButtonPart: |
| default: |
| break; |
| } |
| |
| return false; |
| } |
| |
| void ThemePainter::PaintSliderTicks(const LayoutObject& o, |
| const PaintInfo& paint_info, |
| const IntRect& rect) { |
| Node* node = o.GetNode(); |
| if (!IsHTMLInputElement(node)) |
| return; |
| |
| HTMLInputElement* input = ToHTMLInputElement(node); |
| if (input->type() != InputTypeNames::range || |
| !input->UserAgentShadowRoot()->HasChildren()) |
| return; |
| |
| HTMLDataListElement* data_list = input->DataList(); |
| if (!data_list) |
| return; |
| |
| double min = input->Minimum(); |
| double max = input->Maximum(); |
| ControlPart part = o.StyleRef().Appearance(); |
| // We don't support ticks on alternate sliders like MediaVolumeSliders. |
| if (part != kSliderHorizontalPart && part != kSliderVerticalPart) |
| return; |
| bool is_horizontal = part == kSliderHorizontalPart; |
| |
| IntSize thumb_size; |
| LayoutObject* thumb_layout_object = |
| input->UserAgentShadowRoot() |
| ->getElementById(ShadowElementNames::SliderThumb()) |
| ->GetLayoutObject(); |
| if (thumb_layout_object) { |
| const ComputedStyle& thumb_style = thumb_layout_object->StyleRef(); |
| int thumb_width = thumb_style.Width().IntValue(); |
| int thumb_height = thumb_style.Height().IntValue(); |
| thumb_size.SetWidth(is_horizontal ? thumb_width : thumb_height); |
| thumb_size.SetHeight(is_horizontal ? thumb_height : thumb_width); |
| } |
| |
| IntSize tick_size = LayoutTheme::GetTheme().SliderTickSize(); |
| float zoom_factor = o.StyleRef().EffectiveZoom(); |
| FloatRect tick_rect; |
| int tick_region_side_margin = 0; |
| int tick_region_width = 0; |
| IntRect track_bounds; |
| LayoutObject* track_layout_object = |
| input->UserAgentShadowRoot() |
| ->getElementById(ShadowElementNames::SliderTrack()) |
| ->GetLayoutObject(); |
| // We can ignoring transforms because transform is handled by the graphics |
| // context. |
| if (track_layout_object) |
| track_bounds = |
| track_layout_object->AbsoluteBoundingBoxRectIgnoringTransforms(); |
| IntRect slider_bounds = o.AbsoluteBoundingBoxRectIgnoringTransforms(); |
| |
| // Make position relative to the transformed ancestor element. |
| track_bounds.SetX(track_bounds.X() - slider_bounds.X() + rect.X()); |
| track_bounds.SetY(track_bounds.Y() - slider_bounds.Y() + rect.Y()); |
| |
| if (is_horizontal) { |
| tick_rect.SetWidth(floor(tick_size.Width() * zoom_factor)); |
| tick_rect.SetHeight(floor(tick_size.Height() * zoom_factor)); |
| tick_rect.SetY( |
| floor(rect.Y() + rect.Height() / 2.0 + |
| LayoutTheme::GetTheme().SliderTickOffsetFromTrackCenter() * |
| zoom_factor)); |
| tick_region_side_margin = |
| track_bounds.X() + |
| (thumb_size.Width() - tick_size.Width() * zoom_factor) / 2.0; |
| tick_region_width = track_bounds.Width() - thumb_size.Width(); |
| } else { |
| tick_rect.SetWidth(floor(tick_size.Height() * zoom_factor)); |
| tick_rect.SetHeight(floor(tick_size.Width() * zoom_factor)); |
| tick_rect.SetX( |
| floor(rect.X() + rect.Width() / 2.0 + |
| LayoutTheme::GetTheme().SliderTickOffsetFromTrackCenter() * |
| zoom_factor)); |
| tick_region_side_margin = |
| track_bounds.Y() + |
| (thumb_size.Width() - tick_size.Width() * zoom_factor) / 2.0; |
| tick_region_width = track_bounds.Height() - thumb_size.Width(); |
| } |
| HTMLDataListOptionsCollection* options = data_list->options(); |
| for (unsigned i = 0; HTMLOptionElement* option_element = options->Item(i); |
| i++) { |
| String value = option_element->value(); |
| if (option_element->IsDisabledFormControl() || value.IsEmpty()) |
| continue; |
| if (!input->IsValidValue(value)) |
| continue; |
| double parsed_value = |
| ParseToDoubleForNumberType(input->SanitizeValue(value)); |
| double tick_fraction = (parsed_value - min) / (max - min); |
| double tick_ratio = is_horizontal && o.StyleRef().IsLeftToRightDirection() |
| ? tick_fraction |
| : 1.0 - tick_fraction; |
| double tick_position = |
| round(tick_region_side_margin + tick_region_width * tick_ratio); |
| if (is_horizontal) |
| tick_rect.SetX(tick_position); |
| else |
| tick_rect.SetY(tick_position); |
| paint_info.context.FillRect(tick_rect, |
| o.ResolveColor(GetCSSPropertyColor())); |
| } |
| } |
| |
| bool ThemePainter::PaintUsingFallbackTheme(const Node* node, |
| const ComputedStyle& style, |
| const PaintInfo& paint_info, |
| const IntRect& paint_rect) { |
| ControlPart part = style.Appearance(); |
| switch (part) { |
| case kCheckboxPart: |
| return PaintCheckboxUsingFallbackTheme(node, style, paint_info, |
| paint_rect); |
| case kRadioPart: |
| return PaintRadioUsingFallbackTheme(node, style, paint_info, paint_rect); |
| default: |
| break; |
| } |
| return true; |
| } |
| |
| bool ThemePainter::PaintCheckboxUsingFallbackTheme(const Node* node, |
| const ComputedStyle& style, |
| const PaintInfo& paint_info, |
| const IntRect& paint_rect) { |
| WebFallbackThemeEngine::ExtraParams extra_params; |
| PaintCanvas* canvas = paint_info.context.Canvas(); |
| extra_params.button.checked = LayoutTheme::IsChecked(node); |
| extra_params.button.indeterminate = LayoutTheme::IsIndeterminate(node); |
| |
| float zoom_level = style.EffectiveZoom(); |
| GraphicsContextStateSaver state_saver(paint_info.context); |
| IntRect unzoomed_rect = paint_rect; |
| if (zoom_level != 1) { |
| unzoomed_rect.SetWidth(unzoomed_rect.Width() / zoom_level); |
| unzoomed_rect.SetHeight(unzoomed_rect.Height() / zoom_level); |
| paint_info.context.Translate(unzoomed_rect.X(), unzoomed_rect.Y()); |
| paint_info.context.Scale(zoom_level, zoom_level); |
| paint_info.context.Translate(-unzoomed_rect.X(), -unzoomed_rect.Y()); |
| } |
| |
| Platform::Current()->FallbackThemeEngine()->Paint( |
| canvas, WebFallbackThemeEngine::kPartCheckbox, |
| GetWebFallbackThemeState(node), WebRect(unzoomed_rect), &extra_params); |
| return false; |
| } |
| |
| bool ThemePainter::PaintRadioUsingFallbackTheme(const Node* node, |
| const ComputedStyle& style, |
| const PaintInfo& paint_info, |
| const IntRect& paint_rect) { |
| WebFallbackThemeEngine::ExtraParams extra_params; |
| WebCanvas* canvas = paint_info.context.Canvas(); |
| extra_params.button.checked = LayoutTheme::IsChecked(node); |
| extra_params.button.indeterminate = LayoutTheme::IsIndeterminate(node); |
| |
| float zoom_level = style.EffectiveZoom(); |
| GraphicsContextStateSaver state_saver(paint_info.context); |
| IntRect unzoomed_rect = paint_rect; |
| if (zoom_level != 1) { |
| unzoomed_rect.SetWidth(unzoomed_rect.Width() / zoom_level); |
| unzoomed_rect.SetHeight(unzoomed_rect.Height() / zoom_level); |
| paint_info.context.Translate(unzoomed_rect.X(), unzoomed_rect.Y()); |
| paint_info.context.Scale(zoom_level, zoom_level); |
| paint_info.context.Translate(-unzoomed_rect.X(), -unzoomed_rect.Y()); |
| } |
| |
| Platform::Current()->FallbackThemeEngine()->Paint( |
| canvas, WebFallbackThemeEngine::kPartRadio, |
| GetWebFallbackThemeState(node), WebRect(unzoomed_rect), &extra_params); |
| return false; |
| } |
| |
| } // namespace blink |
