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/**
* This file is part of the theme implementation for form controls in WebCore.
*
* Copyright (C) 2005, 2006, 2007, 2008 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 "config.h"
#include "RenderTheme.h"
#include "CSSValueKeywords.h"
#include "Document.h"
#include "FocusController.h"
#include "FontSelector.h"
#include "Frame.h"
#include "GraphicsContext.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "Page.h"
#include "RenderStyle.h"
#include "RenderView.h"
#include "SelectionController.h"
#include "Settings.h"
// The methods in this file are shared by all themes on every platform.
namespace WebCore {
using namespace HTMLNames;
RenderTheme::RenderTheme()
#if USE(NEW_THEME)
: m_theme(platformTheme())
#endif
{
}
void RenderTheme::adjustStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e,
bool UAHasAppearance, const BorderData& border, const FillLayer& background, const Color& backgroundColor)
{
// Force inline and table display styles to be inline-block (except for table- which is block)
ControlPart part = style->appearance();
if (style->display() == INLINE || style->display() == INLINE_TABLE || style->display() == TABLE_ROW_GROUP ||
style->display() == TABLE_HEADER_GROUP || style->display() == TABLE_FOOTER_GROUP ||
style->display() == TABLE_ROW || style->display() == TABLE_COLUMN_GROUP || style->display() == TABLE_COLUMN ||
style->display() == TABLE_CELL || style->display() == TABLE_CAPTION)
style->setDisplay(INLINE_BLOCK);
else if (style->display() == COMPACT || style->display() == RUN_IN || style->display() == LIST_ITEM || style->display() == TABLE)
style->setDisplay(BLOCK);
if (UAHasAppearance && theme()->isControlStyled(style, border, background, backgroundColor)) {
if (part == MenulistPart) {
style->setAppearance(MenulistButtonPart);
part = MenulistButtonPart;
} else
style->setAppearance(NoControlPart);
}
if (!style->hasAppearance())
return;
// Never support box-shadow on native controls.
style->setBoxShadow(0);
#if USE(NEW_THEME)
switch (part) {
case CheckboxPart:
case RadioPart:
case PushButtonPart:
case SquareButtonPart:
case DefaultButtonPart:
case ButtonPart: {
// Border
LengthBox borderBox(style->borderTopWidth(), style->borderRightWidth(), style->borderBottomWidth(), style->borderLeftWidth());
borderBox = m_theme->controlBorder(part, style->font(), borderBox, style->effectiveZoom());
if (borderBox.top().value() != style->borderTopWidth()) {
if (borderBox.top().value())
style->setBorderTopWidth(borderBox.top().value());
else
style->resetBorderTop();
}
if (borderBox.right().value() != style->borderRightWidth()) {
if (borderBox.right().value())
style->setBorderRightWidth(borderBox.right().value());
else
style->resetBorderRight();
}
if (borderBox.bottom().value() != style->borderBottomWidth()) {
style->setBorderBottomWidth(borderBox.bottom().value());
if (borderBox.bottom().value())
style->setBorderBottomWidth(borderBox.bottom().value());
else
style->resetBorderBottom();
}
if (borderBox.left().value() != style->borderLeftWidth()) {
style->setBorderLeftWidth(borderBox.left().value());
if (borderBox.left().value())
style->setBorderLeftWidth(borderBox.left().value());
else
style->resetBorderLeft();
}
// Padding
LengthBox paddingBox = m_theme->controlPadding(part, style->font(), style->paddingBox(), style->effectiveZoom());
if (paddingBox != style->paddingBox())
style->setPaddingBox(paddingBox);
// Whitespace
if (m_theme->controlRequiresPreWhiteSpace(part))
style->setWhiteSpace(PRE);
// Width / Height
// The width and height here are affected by the zoom.
// FIXME: Check is flawed, since it doesn't take min-width/max-width into account.
LengthSize controlSize = m_theme->controlSize(part, style->font(), LengthSize(style->width(), style->height()), style->effectiveZoom());
if (controlSize.width() != style->width())
style->setWidth(controlSize.width());
if (controlSize.height() != style->height())
style->setHeight(controlSize.height());
// Min-Width / Min-Height
LengthSize minControlSize = m_theme->minimumControlSize(part, style->font(), style->effectiveZoom());
if (minControlSize.width() != style->minWidth())
style->setMinWidth(minControlSize.width());
if (minControlSize.height() != style->minHeight())
style->setMinHeight(minControlSize.height());
// Font
FontDescription controlFont = m_theme->controlFont(part, style->font(), style->effectiveZoom());
if (controlFont != style->font().fontDescription()) {
// Reset our line-height
style->setLineHeight(RenderStyle::initialLineHeight());
// Now update our font.
if (style->setFontDescription(controlFont))
style->font().update(0);
}
}
default:
break;
}
#endif
// Call the appropriate style adjustment method based off the appearance value.
switch (style->appearance()) {
#if !USE(NEW_THEME)
case CheckboxPart:
return adjustCheckboxStyle(selector, style, e);
case RadioPart:
return adjustRadioStyle(selector, style, e);
case PushButtonPart:
case SquareButtonPart:
case DefaultButtonPart:
case ButtonPart:
return adjustButtonStyle(selector, style, e);
#endif
case TextFieldPart:
return adjustTextFieldStyle(selector, style, e);
case TextAreaPart:
return adjustTextAreaStyle(selector, style, e);
#ifdef ANDROID_LISTBOX_USES_MENU_LIST
case ListboxPart:
return adjustListboxStyle(selector, style, e);
#endif
case MenulistPart:
return adjustMenuListStyle(selector, style, e);
case MenulistButtonPart:
return adjustMenuListButtonStyle(selector, style, e);
case MediaSliderPart:
case SliderHorizontalPart:
case SliderVerticalPart:
return adjustSliderTrackStyle(selector, style, e);
case SliderThumbHorizontalPart:
case SliderThumbVerticalPart:
return adjustSliderThumbStyle(selector, style, e);
case SearchFieldPart:
return adjustSearchFieldStyle(selector, style, e);
case SearchFieldCancelButtonPart:
return adjustSearchFieldCancelButtonStyle(selector, style, e);
case SearchFieldDecorationPart:
return adjustSearchFieldDecorationStyle(selector, style, e);
case SearchFieldResultsDecorationPart:
return adjustSearchFieldResultsDecorationStyle(selector, style, e);
case SearchFieldResultsButtonPart:
return adjustSearchFieldResultsButtonStyle(selector, style, e);
default:
break;
}
}
#if !PLATFORM(QT)
void RenderTheme::adjustDefaultStyleSheet(CSSStyleSheet*)
{
}
#endif
bool RenderTheme::paint(RenderObject* o, const RenderObject::PaintInfo& paintInfo, const IntRect& r)
{
// If painting is disabled, but we aren't updating control tints, then just bail.
// If we are updating control tints, just schedule a repaint if the theme supports tinting
// for that control.
if (paintInfo.context->updatingControlTints()) {
if (controlSupportsTints(o))
o->repaint();
return false;
}
if (paintInfo.context->paintingDisabled())
return false;
ControlPart part = o->style()->appearance();
#if USE(NEW_THEME)
switch (part) {
case CheckboxPart:
case RadioPart:
case PushButtonPart:
case SquareButtonPart:
case DefaultButtonPart:
case ButtonPart:
m_theme->paint(part, controlStatesForRenderer(o), const_cast<GraphicsContext*>(paintInfo.context), r, o->style()->effectiveZoom(), o->view()->frameView());
return false;
default:
break;
}
#endif
// Call the appropriate paint method based off the appearance value.
switch (part) {
#if !USE(NEW_THEME)
case CheckboxPart:
return paintCheckbox(o, paintInfo, r);
case RadioPart:
return paintRadio(o, paintInfo, r);
case PushButtonPart:
case SquareButtonPart:
case DefaultButtonPart:
case ButtonPart:
return paintButton(o, paintInfo, r);
#endif
case MenulistPart:
return paintMenuList(o, paintInfo, r);
case SliderHorizontalPart:
case SliderVerticalPart:
return paintSliderTrack(o, paintInfo, r);
case SliderThumbHorizontalPart:
case SliderThumbVerticalPart:
if (o->parent()->isSlider())
return paintSliderThumb(o, paintInfo, r);
// We don't support drawing a slider thumb without a parent slider
break;
case MediaFullscreenButtonPart:
return paintMediaFullscreenButton(o, paintInfo, r);
case MediaPlayButtonPart:
return paintMediaPlayButton(o, paintInfo, r);
case MediaMuteButtonPart:
return paintMediaMuteButton(o, paintInfo, r);
case MediaSeekBackButtonPart:
return paintMediaSeekBackButton(o, paintInfo, r);
case MediaSeekForwardButtonPart:
return paintMediaSeekForwardButton(o, paintInfo, r);
case MediaSliderPart:
return paintMediaSliderTrack(o, paintInfo, r);
case MediaSliderThumbPart:
if (o->parent()->isSlider())
return paintMediaSliderThumb(o, paintInfo, r);
break;
case MenulistButtonPart:
case TextFieldPart:
case TextAreaPart:
case ListboxPart:
return true;
case SearchFieldPart:
return paintSearchField(o, paintInfo, r);
case SearchFieldCancelButtonPart:
return paintSearchFieldCancelButton(o, paintInfo, r);
case SearchFieldDecorationPart:
return paintSearchFieldDecoration(o, paintInfo, r);
case SearchFieldResultsDecorationPart:
return paintSearchFieldResultsDecoration(o, paintInfo, r);
case SearchFieldResultsButtonPart:
return paintSearchFieldResultsButton(o, paintInfo, r);
default:
break;
}
return true; // We don't support the appearance, so let the normal background/border paint.
}
bool RenderTheme::paintBorderOnly(RenderObject* o, const RenderObject::PaintInfo& paintInfo, const IntRect& r)
{
if (paintInfo.context->paintingDisabled())
return false;
// Call the appropriate paint method based off the appearance value.
switch (o->style()->appearance()) {
case TextFieldPart:
return paintTextField(o, paintInfo, r);
case ListboxPart:
case TextAreaPart:
return paintTextArea(o, paintInfo, r);
case MenulistButtonPart:
return true;
case CheckboxPart:
case RadioPart:
case PushButtonPart:
case SquareButtonPart:
case DefaultButtonPart:
case ButtonPart:
case MenulistPart:
case SliderHorizontalPart:
case SliderVerticalPart:
case SliderThumbHorizontalPart:
case SliderThumbVerticalPart:
case SearchFieldPart:
case SearchFieldCancelButtonPart:
case SearchFieldDecorationPart:
case SearchFieldResultsDecorationPart:
case SearchFieldResultsButtonPart:
default:
break;
}
return false;
}
bool RenderTheme::paintDecorations(RenderObject* o, const RenderObject::PaintInfo& paintInfo, const IntRect& r)
{
if (paintInfo.context->paintingDisabled())
return false;
// Call the appropriate paint method based off the appearance value.
switch (o->style()->appearance()) {
case MenulistButtonPart:
return paintMenuListButton(o, paintInfo, r);
case TextFieldPart:
case TextAreaPart:
case ListboxPart:
case CheckboxPart:
case RadioPart:
case PushButtonPart:
case SquareButtonPart:
case DefaultButtonPart:
case ButtonPart:
case MenulistPart:
case SliderHorizontalPart:
case SliderVerticalPart:
case SliderThumbHorizontalPart:
case SliderThumbVerticalPart:
case SearchFieldPart:
case SearchFieldCancelButtonPart:
case SearchFieldDecorationPart:
case SearchFieldResultsDecorationPart:
case SearchFieldResultsButtonPart:
default:
break;
}
return false;
}
Color RenderTheme::activeSelectionBackgroundColor() const
{
if (!m_activeSelectionColor.isValid())
m_activeSelectionColor = platformActiveSelectionBackgroundColor().blendWithWhite();
return m_activeSelectionColor;
}
Color RenderTheme::inactiveSelectionBackgroundColor() const
{
if (!m_inactiveSelectionColor.isValid())
m_inactiveSelectionColor = platformInactiveSelectionBackgroundColor().blendWithWhite();
return m_inactiveSelectionColor;
}
Color RenderTheme::platformActiveSelectionBackgroundColor() const
{
// Use a blue color by default if the platform theme doesn't define anything.
return Color(0, 0, 255);
}
Color RenderTheme::platformInactiveSelectionBackgroundColor() const
{
// Use a grey color by default if the platform theme doesn't define anything.
return Color(128, 128, 128);
}
Color RenderTheme::platformActiveSelectionForegroundColor() const
{
return Color();
}
Color RenderTheme::platformInactiveSelectionForegroundColor() const
{
return Color();
}
Color RenderTheme::activeListBoxSelectionBackgroundColor() const
{
return activeSelectionBackgroundColor();
}
Color RenderTheme::activeListBoxSelectionForegroundColor() const
{
// Use a white color by default if the platform theme doesn't define anything.
return Color(255, 255, 255);
}
Color RenderTheme::inactiveListBoxSelectionBackgroundColor() const
{
return inactiveSelectionBackgroundColor();
}
Color RenderTheme::inactiveListBoxSelectionForegroundColor() const
{
// Use a black color by default if the platform theme doesn't define anything.
return Color(0, 0, 0);
}
int RenderTheme::baselinePosition(const RenderObject* o) const
{
#if USE(NEW_THEME)
return o->height() + o->marginTop() + m_theme->baselinePositionAdjustment(o->style()->appearance()) * o->style()->effectiveZoom();
#else
return o->height() + o->marginTop();
#endif
}
bool RenderTheme::isControlContainer(ControlPart appearance) const
{
// There are more leaves than this, but we'll patch this function as we add support for
// more controls.
return appearance != CheckboxPart && appearance != RadioPart;
}
bool RenderTheme::isControlStyled(const RenderStyle* style, const BorderData& border, const FillLayer& background,
const Color& backgroundColor) const
{
switch (style->appearance()) {
case PushButtonPart:
case SquareButtonPart:
case DefaultButtonPart:
case ButtonPart:
case ListboxPart:
case MenulistPart:
// FIXME: Uncomment this when making search fields style-able.
// case SearchFieldPart:
case TextFieldPart:
case TextAreaPart:
// Test the style to see if the UA border and background match.
return (style->border() != border ||
*style->backgroundLayers() != background ||
style->backgroundColor() != backgroundColor);
default:
return false;
}
}
void RenderTheme::adjustRepaintRect(const RenderObject* o, IntRect& r)
{
#if USE(NEW_THEME)
m_theme->inflateControlPaintRect(o->style()->appearance(), controlStatesForRenderer(o), r, o->style()->effectiveZoom());
#endif
}
bool RenderTheme::supportsFocusRing(const RenderStyle* style) const
{
return (style->hasAppearance() && style->appearance() != TextFieldPart && style->appearance() != TextAreaPart && style->appearance() != MenulistButtonPart && style->appearance() != ListboxPart);
}
bool RenderTheme::stateChanged(RenderObject* o, ControlState state) const
{
// Default implementation assumes the controls dont respond to changes in :hover state
if (state == HoverState && !supportsHover(o->style()))
return false;
// Assume pressed state is only responded to if the control is enabled.
if (state == PressedState && !isEnabled(o))
return false;
// Repaint the control.
o->repaint();
return true;
}
ControlStates RenderTheme::controlStatesForRenderer(const RenderObject* o) const
{
ControlStates result = 0;
if (isHovered(o))
result |= HoverState;
if (isPressed(o))
result |= PressedState;
if (isFocused(o) && o->style()->outlineStyleIsAuto())
result |= FocusState;
if (isEnabled(o))
result |= EnabledState;
if (isChecked(o))
result |= CheckedState;
if (isReadOnlyControl(o))
result |= ReadOnlyState;
if (isDefault(o))
result |= DefaultState;
if (!isActive(o))
result |= WindowInactiveState;
if (isIndeterminate(o))
result |= IndeterminateState;
return result;
}
bool RenderTheme::isActive(const RenderObject* o) const
{
Node* node = o->element();
if (!node)
return false;
Frame* frame = node->document()->frame();
if (!frame)
return false;
Page* page = frame->page();
if (!page)
return false;
return page->focusController()->isActive();
}
bool RenderTheme::isChecked(const RenderObject* o) const
{
if (!o->element())
return false;
return o->element()->isChecked();
}
bool RenderTheme::isIndeterminate(const RenderObject* o) const
{
if (!o->element())
return false;
return o->element()->isIndeterminate();
}
bool RenderTheme::isEnabled(const RenderObject* o) const
{
if (!o->element())
return true;
return o->element()->isEnabled();
}
bool RenderTheme::isFocused(const RenderObject* o) const
{
Node* node = o->element();
if (!node)
return false;
Document* document = node->document();
Frame* frame = document->frame();
return node == document->focusedNode() && frame && frame->selection()->isFocusedAndActive();
}
bool RenderTheme::isPressed(const RenderObject* o) const
{
if (!o->element())
return false;
return o->element()->active();
}
bool RenderTheme::isReadOnlyControl(const RenderObject* o) const
{
if (!o->element())
return false;
return o->element()->isReadOnlyControl();
}
bool RenderTheme::isHovered(const RenderObject* o) const
{
if (!o->element())
return false;
return o->element()->hovered();
}
bool RenderTheme::isDefault(const RenderObject* o) const
{
if (!o->document())
return false;
Settings* settings = o->document()->settings();
if (!settings || !settings->inApplicationChromeMode())
return false;
return o->style()->appearance() == DefaultButtonPart;
}
#if !USE(NEW_THEME)
void RenderTheme::adjustCheckboxStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
// A summary of the rules for checkbox designed to match WinIE:
// width/height - honored (WinIE actually scales its control for small widths, but lets it overflow for small heights.)
// font-size - not honored (control has no text), but we use it to decide which control size to use.
setCheckboxSize(style);
// padding - not honored by WinIE, needs to be removed.
style->resetPadding();
// border - honored by WinIE, but looks terrible (just paints in the control box and turns off the Windows XP theme)
// for now, we will not honor it.
style->resetBorder();
style->setBoxShadow(0);
}
void RenderTheme::adjustRadioStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
// A summary of the rules for checkbox designed to match WinIE:
// width/height - honored (WinIE actually scales its control for small widths, but lets it overflow for small heights.)
// font-size - not honored (control has no text), but we use it to decide which control size to use.
setRadioSize(style);
// padding - not honored by WinIE, needs to be removed.
style->resetPadding();
// border - honored by WinIE, but looks terrible (just paints in the control box and turns off the Windows XP theme)
// for now, we will not honor it.
style->resetBorder();
style->setBoxShadow(0);
}
void RenderTheme::adjustButtonStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
// Most platforms will completely honor all CSS, and so we have no need to adjust the style
// at all by default. We will still allow the theme a crack at setting up a desired vertical size.
setButtonSize(style);
}
#endif
void RenderTheme::adjustTextFieldStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustTextAreaStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustMenuListStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustMenuListButtonStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustSliderTrackStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustSliderThumbStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustSliderThumbSize(RenderObject*) const
{
}
void RenderTheme::adjustSearchFieldStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustSearchFieldCancelButtonStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustSearchFieldDecorationStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustSearchFieldResultsDecorationStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::adjustSearchFieldResultsButtonStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
}
void RenderTheme::platformColorsDidChange()
{
m_activeSelectionColor = Color();
m_inactiveSelectionColor = Color();
}
Color RenderTheme::systemColor(int cssValueId) const
{
switch (cssValueId) {
case CSSValueActiveborder:
return 0xFFFFFFFF;
case CSSValueActivecaption:
return 0xFFCCCCCC;
case CSSValueAppworkspace:
return 0xFFFFFFFF;
case CSSValueBackground:
return 0xFF6363CE;
case CSSValueButtonface:
return 0xFFC0C0C0;
case CSSValueButtonhighlight:
return 0xFFDDDDDD;
case CSSValueButtonshadow:
return 0xFF888888;
case CSSValueButtontext:
return 0xFF000000;
case CSSValueCaptiontext:
return 0xFF000000;
case CSSValueGraytext:
return 0xFF808080;
case CSSValueHighlight:
return 0xFFB5D5FF;
case CSSValueHighlighttext:
return 0xFF000000;
case CSSValueInactiveborder:
return 0xFFFFFFFF;
case CSSValueInactivecaption:
return 0xFFFFFFFF;
case CSSValueInactivecaptiontext:
return 0xFF7F7F7F;
case CSSValueInfobackground:
return 0xFFFBFCC5;
case CSSValueInfotext:
return 0xFF000000;
case CSSValueMenu:
return 0xFFC0C0C0;
case CSSValueMenutext:
return 0xFF000000;
case CSSValueScrollbar:
return 0xFFFFFFFF;
case CSSValueText:
return 0xFF000000;
case CSSValueThreeddarkshadow:
return 0xFF666666;
case CSSValueThreedface:
return 0xFFC0C0C0;
case CSSValueThreedhighlight:
return 0xFFDDDDDD;
case CSSValueThreedlightshadow:
return 0xFFC0C0C0;
case CSSValueThreedshadow:
return 0xFF888888;
case CSSValueWindow:
return 0xFFFFFFFF;
case CSSValueWindowframe:
return 0xFFCCCCCC;
case CSSValueWindowtext:
return 0xFF000000;
}
return Color();
}
Color RenderTheme::platformTextSearchHighlightColor() const
{
return Color(255, 255, 0);
}
} // namespace WebCore