void BBSplitter::layoutChildren(){
if( (style()&3)==1 ){
panel(0)->setShape( 0,0,_divx,clientHeight() );
panel(1)->setShape( _divx+_divw,0,clientWidth()-_divx-_divw,clientHeight() );
}else if( (style()&3)==2 ){
panel(0)->setShape( 0,0,clientWidth(),_divy );
panel(1)->setShape( 0,_divy+_divh,clientWidth(),clientHeight()-_divy-_divh );
}else if( (style()&3)==3 ){
panel(0)->setShape( 0,0,_divx,_divy );
panel(1)->setShape( _divx+_divw,0,clientWidth()-_divx-_divw,_divy );
panel(2)->setShape( 0,_divy+_divh,_divx,clientHeight()-_divy-_divh );
panel(3)->setShape( _divx+_divw,_divy+_divh,clientWidth()-_divx-_divw,clientHeight()-_divy-_divh );
}
}
LayoutUnit LayoutReplaced::computeConstrainedLogicalWidth(
ShouldComputePreferred shouldComputePreferred) const {
if (shouldComputePreferred == ComputePreferred)
return computeReplacedLogicalWidthRespectingMinMaxWidth(LayoutUnit(),
ComputePreferred);
// The aforementioned 'constraint equation' used for block-level, non-replaced
// elements in normal flow:
// 'margin-left' + 'border-left-width' + 'padding-left' + 'width' +
// 'padding-right' + 'border-right-width' + 'margin-right' = width of
// containing block
LayoutUnit logicalWidth = containingBlock()->availableLogicalWidth();
// This solves above equation for 'width' (== logicalWidth).
LayoutUnit marginStart =
minimumValueForLength(style()->marginStart(), logicalWidth);
LayoutUnit marginEnd =
minimumValueForLength(style()->marginEnd(), logicalWidth);
logicalWidth = (logicalWidth -
(marginStart + marginEnd + (size().width() - clientWidth())))
.clampNegativeToZero();
return computeReplacedLogicalWidthRespectingMinMaxWidth(
logicalWidth, shouldComputePreferred);
}
LayoutUnit RenderReplaced::computeReplacedLogicalWidth(ShouldComputePreferred shouldComputePreferred) const
{
if (style().logicalWidth().isSpecified() || style().logicalWidth().isIntrinsic())
return computeReplacedLogicalWidthRespectingMinMaxWidth(computeReplacedLogicalWidthUsing(MainOrPreferredSize, style().logicalWidth()), shouldComputePreferred);
RenderBox* contentRenderer = embeddedContentBox();
// 10.3.2 Inline, replaced elements: http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width
double intrinsicRatio = 0;
FloatSize constrainedSize;
computeAspectRatioInformationForRenderBox(contentRenderer, constrainedSize, intrinsicRatio);
if (style().logicalWidth().isAuto()) {
bool computedHeightIsAuto = hasAutoHeightOrContainingBlockWithAutoHeight();
bool hasIntrinsicWidth = constrainedSize.width() > 0;
// If 'height' and 'width' both have computed values of 'auto' and the element also has an intrinsic width, then that intrinsic width is the used value of 'width'.
if (computedHeightIsAuto && hasIntrinsicWidth)
return computeReplacedLogicalWidthRespectingMinMaxWidth(constrainedSize.width(), shouldComputePreferred);
bool hasIntrinsicHeight = constrainedSize.height() > 0;
if (intrinsicRatio) {
// If 'height' and 'width' both have computed values of 'auto' and the element has no intrinsic width, but does have an intrinsic height and intrinsic ratio;
// or if 'width' has a computed value of 'auto', 'height' has some other computed value, and the element does have an intrinsic ratio; then the used value
// of 'width' is: (used height) * (intrinsic ratio)
if (intrinsicRatio && ((computedHeightIsAuto && !hasIntrinsicWidth && hasIntrinsicHeight) || !computedHeightIsAuto)) {
LayoutUnit logicalHeight = computeReplacedLogicalHeight();
return computeReplacedLogicalWidthRespectingMinMaxWidth(roundToInt(round(logicalHeight * intrinsicRatio)), shouldComputePreferred);
}
// If 'height' and 'width' both have computed values of 'auto' and the element has an intrinsic ratio but no intrinsic height or width, then the used value of
// 'width' is undefined in CSS 2.1. However, it is suggested that, if the containing block's width does not itself depend on the replaced element's width, then
// the used value of 'width' is calculated from the constraint equation used for block-level, non-replaced elements in normal flow.
if (computedHeightIsAuto && !hasIntrinsicWidth && !hasIntrinsicHeight) {
// The aforementioned 'constraint equation' used for block-level, non-replaced elements in normal flow:
// 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' = width of containing block
LayoutUnit logicalWidth;
if (auto* blockWithWidth = firstContainingBlockWithLogicalWidth(this)) {
logicalWidth = blockWithWidth->computeReplacedLogicalWidthUsing(MainOrPreferredSize, blockWithWidth->style().logicalWidth());
if (!blockWithWidth->style().logicalMaxWidth().isMaxContent() && !blockWithWidth->style().logicalMinWidth().isMinContent())
logicalWidth = blockWithWidth->computeReplacedLogicalWidthRespectingMinMaxWidth(logicalWidth, shouldComputePreferred);
} else
logicalWidth = containingBlock()->availableLogicalWidth();
// This solves above equation for 'width' (== logicalWidth).
LayoutUnit marginStart = minimumValueForLength(style().marginStart(), logicalWidth);
LayoutUnit marginEnd = minimumValueForLength(style().marginEnd(), logicalWidth);
logicalWidth = std::max<LayoutUnit>(0, logicalWidth - (marginStart + marginEnd + (width() - clientWidth())));
return computeReplacedLogicalWidthRespectingMinMaxWidth(logicalWidth, shouldComputePreferred);
}
}
// Otherwise, if 'width' has a computed value of 'auto', and the element has an intrinsic width, then that intrinsic width is the used value of 'width'.
if (hasIntrinsicWidth)
return computeReplacedLogicalWidthRespectingMinMaxWidth(constrainedSize.width(), shouldComputePreferred);
// Otherwise, if 'width' has a computed value of 'auto', but none of the conditions above are met, then the used value of 'width' becomes 300px. If 300px is too
// wide to fit the device, UAs should use the width of the largest rectangle that has a 2:1 ratio and fits the device instead.
// Note: We fall through and instead return intrinsicLogicalWidth() here - to preserve existing WebKit behavior, which might or might not be correct, or desired.
// Changing this to return cDefaultWidth, will affect lots of test results. Eg. some tests assume that a blank <img> tag (which implies width/height=auto)
// has no intrinsic size, which is wrong per CSS 2.1, but matches our behavior since a long time.
}
return computeReplacedLogicalWidthRespectingMinMaxWidth(intrinsicLogicalWidth(), shouldComputePreferred);
}
LRESULT Win32Splitter::wndProc( HWND hwnd,UINT msg,WPARAM wp,LPARAM lp,WNDPROC proc ){
PAINTSTRUCT ps;
switch( msg ){
case WM_PAINT:
if( HDC hdc=BeginPaint( hwnd,&ps ) ){
if( (_style&3)==1 ){
RECT r0={_divx,0,_divx+_divw,clientHeight()};
DrawEdge( hdc,&r0,EDGE_RAISED,BF_LEFT|BF_RIGHT|BF_MIDDLE );
}else if( (_style&3)==2 ){
RECT r0={0,_divy,clientWidth(),_divy+_divh};
DrawEdge( hdc,&r0,EDGE_RAISED,BF_TOP|BF_BOTTOM|BF_MIDDLE );
}else if( (_style&3)==3 ){
RECT r0={_divx,_divy,_divx+_divw,_divy+_divh};
DrawEdge( hdc,&r0,EDGE_RAISED,BF_MIDDLE );
RECT r1={_divx,0,_divx+_divw,_divy+1};
DrawEdge( hdc,&r1,EDGE_RAISED,BF_LEFT|BF_RIGHT|BF_MIDDLE );
RECT r2={_divx,_divy+_divh-1,_divx+_divw,clientHeight()};
DrawEdge( hdc,&r2,EDGE_RAISED,BF_LEFT|BF_RIGHT|BF_MIDDLE );
RECT r3={0,_divy,_divx+1,_divy+_divh};
DrawEdge( hdc,&r3,EDGE_RAISED,BF_TOP|BF_BOTTOM|BF_MIDDLE );
RECT r4={_divx+_divw-1,_divy,clientWidth(),_divy+_divh};
DrawEdge( hdc,&r4,EDGE_RAISED,BF_TOP|BF_BOTTOM|BF_MIDDLE );
}
EndPaint( hwnd,&ps );
}
ValidateRect( hwnd,0 );
return 0;
case WM_LBUTTONDOWN:
_changing=0;
if( (_style&1) && _mx>=_divx && _mx<_divx+_divw ) _changing|=1;
if( (_style&2) && _my>=_divy && _my<_divy+_divh ) _changing|=2;
return 0;
case WM_LBUTTONUP:
_changing=0;
return 0;
case WM_SETCURSOR:
{
HCURSOR cursor;
bool h=(_style&1) && _mx>=_divx && _mx<_divx+_divw;
bool v=(_style&2) && _my>=_divy && _my<_divy+_divh;
if( h && v ) cursor=LoadCursor( 0,IDC_SIZENESW );
else if( h ) cursor=LoadCursor( 0,IDC_SIZEWE );
else if( v ) cursor=LoadCursor( 0,IDC_SIZENS );
else cursor=LoadCursor( 0,IDC_ARROW );
SetCursor( cursor );
return 1;
}
break;
case WM_MOUSEMOVE:
if( _changing ){
int dx=(_changing&1) ? (short)LOWORD(lp)-_mx : 0;
int dy=(_changing&2) ? (short)HIWORD(lp)-_my : 0;
if( dx || dy ){
setDivShape( _divx+dx,_divy+dy,_divw,_divh );
InvalidateRect( hwnd,0,false );
}
}
_mx=(short)LOWORD(lp);
_my=(short)HIWORD(lp);
return 0;
case WM_ERASEBKGND:
return 1;
}
return CallWindowProc( proc,hwnd,msg,wp,lp );
}
LayoutUnit RenderReplaced::computeReplacedLogicalWidth(bool includeMaxWidth) const
{
if (style()->logicalWidth().isSpecified())
return computeReplacedLogicalWidthRespectingMinMaxWidth(computeReplacedLogicalWidthUsing(style()->logicalWidth()), includeMaxWidth);
RenderBox* contentRenderer = embeddedContentBox();
// 10.3.2 Inline, replaced elements: http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width
bool isPercentageIntrinsicSize = false;
double intrinsicRatio = 0;
FloatSize intrinsicSize;
computeIntrinsicRatioInformationForRenderBox(contentRenderer, intrinsicSize, intrinsicRatio, isPercentageIntrinsicSize);
// FIXME: Remove unnecessary round/roundToInt calls from this method when layout is off ints: webkit.org/b/63656
if (style()->logicalWidth().isAuto()) {
bool heightIsAuto = style()->logicalHeight().isAuto();
bool hasIntrinsicWidth = !isPercentageIntrinsicSize && intrinsicSize.width() > 0;
// If 'height' and 'width' both have computed values of 'auto' and the element also has an intrinsic width, then that intrinsic width is the used value of 'width'.
if (heightIsAuto && hasIntrinsicWidth)
return computeReplacedLogicalWidthRespectingMinMaxWidth(roundToInt(intrinsicSize.width()), includeMaxWidth);
bool hasIntrinsicHeight = !isPercentageIntrinsicSize && intrinsicSize.height() > 0;
if (intrinsicRatio || isPercentageIntrinsicSize) {
// If 'height' and 'width' both have computed values of 'auto' and the element has no intrinsic width, but does have an intrinsic height and intrinsic ratio;
// or if 'width' has a computed value of 'auto', 'height' has some other computed value, and the element does have an intrinsic ratio; then the used value
// of 'width' is: (used height) * (intrinsic ratio)
if (intrinsicRatio && ((heightIsAuto && !hasIntrinsicWidth && hasIntrinsicHeight) || !heightIsAuto)) {
LayoutUnit logicalHeight = computeReplacedLogicalHeightUsing(style()->logicalHeight());
return computeReplacedLogicalWidthRespectingMinMaxWidth(roundToInt(round(logicalHeight * intrinsicRatio)));
}
// If 'height' and 'width' both have computed values of 'auto' and the element has an intrinsic ratio but no intrinsic height or width, then the used value of
// 'width' is undefined in CSS 2.1. However, it is suggested that, if the containing block's width does not itself depend on the replaced element's width, then
// the used value of 'width' is calculated from the constraint equation used for block-level, non-replaced elements in normal flow.
if (heightIsAuto && !hasIntrinsicWidth && !hasIntrinsicHeight && contentRenderer) {
// The aforementioned 'constraint equation' used for block-level, non-replaced elements in normal flow:
// 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' = width of containing block
LayoutUnit logicalWidth;
if (RenderBlock* blockWithWidth = firstContainingBlockWithLogicalWidth(this))
logicalWidth = blockWithWidth->computeReplacedLogicalWidthRespectingMinMaxWidth(blockWithWidth->computeReplacedLogicalWidthUsing(blockWithWidth->style()->logicalWidth()), false);
else
logicalWidth = containingBlock()->availableLogicalWidth();
// This solves above equation for 'width' (== logicalWidth).
LayoutUnit marginStart = minimumValueForLength(style()->marginStart(), logicalWidth);
LayoutUnit marginEnd = minimumValueForLength(style()->marginEnd(), logicalWidth);
logicalWidth = max(ZERO_LAYOUT_UNIT, logicalWidth - (marginStart + marginEnd + (width() - clientWidth())));
if (isPercentageIntrinsicSize)
logicalWidth = roundToInt(logicalWidth * intrinsicSize.width() / 100);
return computeReplacedLogicalWidthRespectingMinMaxWidth(logicalWidth, includeMaxWidth);
}
}
// Otherwise, if 'width' has a computed value of 'auto', and the element has an intrinsic width, then that intrinsic width is the used value of 'width'.
if (hasIntrinsicWidth)
return computeReplacedLogicalWidthRespectingMinMaxWidth(roundToInt(intrinsicSize.width()), includeMaxWidth);
// Otherwise, if 'width' has a computed value of 'auto', but none of the conditions above are met, then the used value of 'width' becomes 300px. If 300px is too
// wide to fit the device, UAs should use the width of the largest rectangle that has a 2:1 ratio and fits the device instead.
// Note: We fall through and instead return intrinsicLogicalWidth() here - to preserve existing WebKit behavior, which might or might not be correct, or desired.
// Changing this to return cDefaultWidth, will affect lots of test results. Eg. some tests assume that a blank <img> tag (which implies width/height=auto)
// has no intrinsic size, which is wrong per CSS 2.1, but matches our behavior since a long time.
}
return computeReplacedLogicalWidthRespectingMinMaxWidth(intrinsicLogicalWidth(), includeMaxWidth);
}
LayoutUnit RenderReplaced::computeReplacedLogicalWidth(bool includeMaxWidth) const
{
if (style()->logicalWidth().isSpecified())
return computeReplacedLogicalWidthRespectingMinMaxWidth(computeReplacedLogicalWidthUsing(style()->logicalWidth()), includeMaxWidth);
RenderBox* contentRenderer = embeddedContentBox();
// 10.3.2 Inline, replaced elements: http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width
bool isPercentageIntrinsicSize = false;
double intrinsicRatio = 0;
FloatSize intrinsicSize;
if (contentRenderer)
contentRenderer->computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio, isPercentageIntrinsicSize);
else
computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio, isPercentageIntrinsicSize);
if (intrinsicRatio && !isHorizontalWritingMode())
intrinsicRatio = 1 / intrinsicRatio;
if (style()->logicalWidth().isAuto()) {
bool heightIsAuto = style()->logicalHeight().isAuto();
bool hasIntrinsicWidth = m_hasIntrinsicSize || (!isPercentageIntrinsicSize && intrinsicSize.width() > 0);
// If 'height' and 'width' both have computed values of 'auto' and the element also has an intrinsic width, then that intrinsic width is the used value of 'width'.
if (heightIsAuto && hasIntrinsicWidth) {
if (m_hasIntrinsicSize)
return computeReplacedLogicalWidthRespectingMinMaxWidth(calcAspectRatioLogicalWidth(), includeMaxWidth);
return static_cast<LayoutUnit>(intrinsicSize.width() * style()->effectiveZoom());
}
bool hasIntrinsicHeight = m_hasIntrinsicSize || (!isPercentageIntrinsicSize && intrinsicSize.height() > 0);
if (intrinsicRatio || isPercentageIntrinsicSize) {
// If 'height' and 'width' both have computed values of 'auto' and the element has no intrinsic width, but does have an intrinsic height and intrinsic ratio;
// or if 'width' has a computed value of 'auto', 'height' has some other computed value, and the element does have an intrinsic ratio; then the used value
// of 'width' is: (used height) * (intrinsic ratio)
if (intrinsicRatio && ((heightIsAuto && !hasIntrinsicWidth && hasIntrinsicHeight) || !heightIsAuto)) {
LayoutUnit logicalHeight = computeReplacedLogicalHeightUsing(style()->logicalHeight());
return computeReplacedLogicalWidthRespectingMinMaxWidth(static_cast<LayoutUnit>(ceil(logicalHeight * intrinsicRatio)));
}
// If 'height' and 'width' both have computed values of 'auto' and the element has an intrinsic ratio but no intrinsic height or width, then the used value of
// 'width' is undefined in CSS 2.1. However, it is suggested that, if the containing block's width does not itself depend on the replaced element's width, then
// the used value of 'width' is calculated from the constraint equation used for block-level, non-replaced elements in normal flow.
if (heightIsAuto && !hasIntrinsicWidth && !hasIntrinsicHeight && contentRenderer) {
// The aforementioned 'constraint equation' used for block-level, non-replaced elements in normal flow:
// 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' = width of containing block
LayoutUnit logicalWidth;
if (RenderBlock* blockWithWidth = firstContainingBlockWithLogicalWidth(this))
logicalWidth = blockWithWidth->computeReplacedLogicalWidthRespectingMinMaxWidth(blockWithWidth->computeReplacedLogicalWidthUsing(blockWithWidth->style()->logicalWidth()), false);
else
logicalWidth = containingBlock()->availableLogicalWidth();
// This solves above equation for 'width' (== logicalWidth).
LayoutUnit marginStart = miminumValueForLength(style()->marginStart(), logicalWidth);
LayoutUnit marginEnd = miminumValueForLength(style()->marginEnd(), logicalWidth);
logicalWidth = max(0, logicalWidth - (marginStart + marginEnd + (width() - clientWidth())));
if (isPercentageIntrinsicSize)
// FIXME: Remove unnecessary rounding when layout is off ints: webkit.org/b/63656
logicalWidth = static_cast<LayoutUnit>(round(logicalWidth * intrinsicSize.width() / 100));
return computeReplacedLogicalWidthRespectingMinMaxWidth(logicalWidth);
}
}
// Otherwise, if 'width' has a computed value of 'auto', and the element has an intrinsic width, then that intrinsic width is the used value of 'width'.
if (hasIntrinsicWidth) {
if (isPercentageIntrinsicSize || m_hasIntrinsicSize)
return computeReplacedLogicalWidthRespectingMinMaxWidth(calcAspectRatioLogicalWidth(), includeMaxWidth);
return static_cast<LayoutUnit>(intrinsicSize.width() * style()->effectiveZoom());
}
// Otherwise, if 'width' has a computed value of 'auto', but none of the conditions above are met, then the used value of 'width' becomes 300px. If 300px is too
// wide to fit the device, UAs should use the width of the largest rectangle that has a 2:1 ratio and fits the device instead.
return computeReplacedLogicalWidthRespectingMinMaxWidth(cDefaultWidth, includeMaxWidth);
}
return computeReplacedLogicalWidthRespectingMinMaxWidth(intrinsicLogicalWidth(), includeMaxWidth);
}