int HTMLString::GetDocumentDisplayRect (WebRect *rect, int n)
{
WebRect displayRect;
HTMLStringDisplay *display = mpFirstDisplay;
while (display && n > 0)
{
if (display->GetStringIndex() + display->GetStringLength() >= miLength)
{
display = 0;
break;
}
n--;
display = display->GetNextSubString();
}
if (display)
{
displayRect.Set(&display->mRect);
if (display->mpParent)
{
DISPLAY_INT x, y;
display->mpParent->GetDisplayPosition(display, &x, &y);
displayRect.MoveTo(x,y);
}
rect->Set(&displayRect);
return (0);
}
return (-1);
}
void DisplayManager::UpdateViewport (void)
{
WebRect view;
WebRect padding;
WebRect vscrollRect;
WebRect hscrollRect;
GetPaddingWidth(&padding);
view.Set (mRect.left + padding.left,
mRect.top + padding.top,
mRect.right - padding.right,
mRect.bottom - padding.bottom);
if (mpVScroll)
{
vscrollRect.Set (mRect.Width() - padding.right - webc_GetDefaultDisplayInt(WEBC_DEFAULT_SLIDER_WIDTH), padding.top,
mRect.Width() - 1 - padding.right, mRect.Height() - 1 - padding.bottom);
view.right -= webc_GetDefaultDisplayInt(WEBC_DEFAULT_SLIDER_WIDTH);
if (mpHScroll)
{
hscrollRect.Set (padding.left, mRect.Height() - padding.bottom - webc_GetDefaultDisplayInt(WEBC_DEFAULT_SLIDER_WIDTH),
mRect.Width() - padding.right - webc_GetDefaultDisplayInt(WEBC_DEFAULT_SLIDER_WIDTH),
mRect.Height() - 1 - padding.bottom);
vscrollRect.bottom -= webc_GetDefaultDisplayInt(WEBC_DEFAULT_SLIDER_WIDTH) - 1;
view.bottom -= webc_GetDefaultDisplayInt(WEBC_DEFAULT_SLIDER_WIDTH);
mpHScroll->Move(&hscrollRect);
}
mpVScroll->Move(&vscrollRect);
}
else
{
if (mpHScroll)
{
hscrollRect.Set (padding.left, mRect.Height() - padding.bottom - webc_GetDefaultDisplayInt(WEBC_DEFAULT_SLIDER_WIDTH),
mRect.Width() - 1 - padding.right,
mRect.Height() - 1 - padding.bottom);
view.bottom -= webc_GetDefaultDisplayInt(WEBC_DEFAULT_SLIDER_WIDTH);
mpHScroll->Move(&hscrollRect);
}
}
view.MoveTo(mViewRect.left, mViewRect.top);
SetViewport(&view);
}
/*---------------------------------------------------------------------------*/
template<class T> IPositionedFormatContext* HTMLElementDisplay<T>::FormatSelfPositioned (
DisplayElement* displayParent,
IPositionedFormatContext* rootContext,
IPositionedFormatContext* parentContext,
FormatContextFactory* childContextFactory,
WEBC_BOOL generateChildContext
)
{
WebRect rect;
WEBC_UINT16 position = GetPosition();
IPositionedFormatContext* childContext = 0;
if (position == TU_POSITION_RELATIVE)
{
if (generateChildContext)
{
const WebRect * tmpRect = &(((DisplayElement *)(this))->mRect);
rect.Set(tmpRect);
rect.MoveTo(0,0);
CSSLength height;
GetCSSLength(&height, CSS_PROPERTY_HEIGHT);
childContext = childContextFactory->newPositioned (
&rect,
(height.type == CSS_LENGTH_UNIT_AUTO) ||
(height.type == CSS_LENGTH_UNIT_PERCENT && parentContext->parentHeightIsAuto()), // parent height is auto
TU_DIR_LTR,
0, // border-left-width
0, // border-top-width
0, // border-right-width
0, // border-bottom-width
0, // autoIndentLeft
0, // autoIndentTop
0 // autoIndentRight
);
}
}
else
{
WebRect containingBlock;
IPositionedFormatContext* containingContext;
DISPLAY_INT borderLeftValue;
DISPLAY_INT borderTopValue;
DISPLAY_INT borderRightValue;
DISPLAY_INT borderBottomValue;
if (displayParent)
{
if (displayParent != T::mpParent)
{
mHtmlElementDisplayFlags &= ~HELEM_DISPLAY_FLAG_STYLE_SET;
}
displayParent->InsertOrdered(this);
}
if (position == TU_POSITION_FIXED)
{
T::SetFixedPosition(WEBC_TRUE);
containingContext = rootContext;
}
else
{
T::SetFixedPosition(WEBC_FALSE);
containingContext = parentContext;
}
containingContext->getContainingBlock(&containingBlock);
WEBC_BOOL parentHeightIsAuto = containingContext->parentHeightIsAuto();
int textDirection = containingContext->getTextDirection();
DISPLAY_INT parentBorderLeft = containingContext->getParentBorderLeft();
DISPLAY_INT parentBorderTop = containingContext->getParentBorderTop();
DISPLAY_INT parentBorderRight = containingContext->getParentBorderRight();
DISPLAY_INT parentBorderBottom = containingContext->getParentBorderBottom();
DISPLAY_INT autoIndentLeft = parentContext->getAutoIndentLeft();
DISPLAY_INT autoIndentTop = parentContext->getAutoIndentTop();
DISPLAY_INT autoIndentRight = parentContext->getAutoIndentRight();
if (position == TU_POSITION_FIXED)
{
WebRect parentRect;
parentContext->getContainingBlock(&parentRect);
autoIndentLeft += parentRect.left;
autoIndentTop += parentRect.top;
autoIndentRight += (containingBlock.right - parentRect.right);
}
DISPLAY_INT parentWidth = containingBlock.Width() - (parentBorderLeft + parentBorderRight);
DISPLAY_INT parentHeight = containingBlock.Height() - (parentBorderTop + parentBorderBottom);
WebFont font = mpHtmlElement->GetWebFont();
DISPLAY_INT emHeight = font? WEB_FONT_HEIGHT(font) : WEBC_CFG_DEFAULT_TEXT_HEIGHT;
DISPLAY_INT exHeight = emHeight >> 1;
// First find the left edge and width
CSSLength left;
CSSLength right;
CSSLength width;
// Find value for left, right, width, marginLeft, marginRight
GetCSSLength(&left, CSS_PROPERTY_LEFT);
GetCSSLength(&right, CSS_PROPERTY_RIGHT);
GetCSSLength(&width, CSS_PROPERTY_WIDTH);
DISPLAY_INT leftValue;
DISPLAY_INT rightValue;
DISPLAY_INT widthValue;
DISPLAY_INT marginLeftValue;
DISPLAY_INT paddingLeftValue;
DISPLAY_INT paddingTopValue;
DISPLAY_INT paddingRightValue;
DISPLAY_INT paddingBottomValue;
// Find value for padding and border
paddingLeftValue = GetPixelLength(CSS_PROPERTY_PADDING_LEFT, parentWidth, emHeight, exHeight, 0);
paddingTopValue = GetPixelLength(CSS_PROPERTY_PADDING_TOP, parentWidth, emHeight, exHeight, 0);
paddingRightValue = GetPixelLength(CSS_PROPERTY_PADDING_RIGHT, parentWidth, emHeight, exHeight, 0);
paddingBottomValue = GetPixelLength(CSS_PROPERTY_PADDING_BOTTOM, parentWidth, emHeight, exHeight, 0);
borderLeftValue = GetBorderWidth(CSS_LEFT, parentWidth, emHeight, exHeight, parentBorderLeft);
borderTopValue = GetBorderWidth(CSS_TOP, parentWidth, emHeight, exHeight, parentBorderTop);
borderRightValue = GetBorderWidth(CSS_RIGHT, parentWidth, emHeight, exHeight, parentBorderRight);
borderBottomValue = GetBorderWidth(CSS_BOTTOM, parentWidth, emHeight, exHeight, parentBorderBottom);
CSSLength height;
CSSLength top;
CSSLength bottom;
DISPLAY_INT heightValue=0;
WEBC_BOOL heightIsAuto=0;
GetCSSLength(&height, CSS_PROPERTY_HEIGHT);
GetCSSLength(&top, CSS_PROPERTY_TOP);
#define NOTHING_KNOWN 0
#define HEIGHT_KNOWN 1
#define TOP_KNOWN 2
#define BOTTOM_KNOWN 4
WEBC_UINT8 verticalCase;
verticalCase = (height.type == CSS_LENGTH_UNIT_AUTO ||
(height.type == CSS_LENGTH_UNIT_PERCENT && parentHeightIsAuto))? 0 : HEIGHT_KNOWN;
verticalCase |= (top.type == CSS_LENGTH_UNIT_AUTO)? 0 : TOP_KNOWN;
if (verticalCase != (HEIGHT_KNOWN|TOP_KNOWN))
{
GetCSSLength(&bottom, CSS_PROPERTY_BOTTOM);
verticalCase |= (bottom.type == CSS_LENGTH_UNIT_AUTO || parentHeightIsAuto)? 0 : BOTTOM_KNOWN;
}
DISPLAY_INT topValue = 0;
DISPLAY_INT bottomValue = 0;
DISPLAY_INT marginTopValue = 0;
DISPLAY_INT marginBottomValue = 0;
switch (verticalCase)
{
case NOTHING_KNOWN:
// top = auto indent top
// height = content height
topValue = autoIndentTop;
heightValue = 0;
heightIsAuto = WEBC_TRUE;
marginTopValue = GetPixelLength(CSS_PROPERTY_MARGIN_TOP, parentWidth, emHeight, exHeight, 0);
break;
case HEIGHT_KNOWN:
// top = auto indent top
// height = height
topValue = autoIndentTop;
heightValue = CSS_LengthToPixels(&height, parentHeight, emHeight, exHeight);
heightIsAuto = WEBC_FALSE;
marginTopValue = GetPixelLength(CSS_PROPERTY_MARGIN_TOP, parentWidth, emHeight, exHeight, 0);
break;
case TOP_KNOWN:
// top = top
// height = content height
if (top.type == CSS_LENGTH_UNIT_PERCENT && parentHeightIsAuto)
{
topValue = autoIndentTop;
}
else
{
topValue = CSS_LengthToPixels(&top, parentHeight, emHeight, exHeight);
}
heightValue = 0;
heightIsAuto = WEBC_TRUE;
marginTopValue = GetPixelLength(CSS_PROPERTY_MARGIN_TOP, parentWidth, emHeight, exHeight, 0);
break;
case HEIGHT_KNOWN|TOP_KNOWN:
// top = top
// height = height
if (top.type == CSS_LENGTH_UNIT_PERCENT && parentHeightIsAuto)
{
topValue = autoIndentTop;
}
else
{
topValue = CSS_LengthToPixels(&top, parentHeight, emHeight, exHeight);
}
heightValue = CSS_LengthToPixels(&height, parentHeight, emHeight, exHeight);
heightIsAuto = WEBC_FALSE;
marginTopValue = GetPixelLength(CSS_PROPERTY_MARGIN_TOP, parentWidth, emHeight, exHeight, 0);
break;
case BOTTOM_KNOWN:
// bottom = bottom
// height = content height
// top = parentHeight - (height + bottom)
bottomValue = GetPixelLength(&bottom, parentHeight, emHeight, exHeight, 0);
marginBottomValue = GetPixelLength(CSS_PROPERTY_MARGIN_BOTTOM, parentWidth, emHeight, exHeight, 0);
heightValue = 0;
heightIsAuto = WEBC_TRUE;
break;
case HEIGHT_KNOWN|BOTTOM_KNOWN:
// bottom = bottom
// height = height
// top = parentHeight - (height + bottom)
bottomValue = GetPixelLength(&bottom, parentHeight, emHeight, exHeight, 0);
heightValue = CSS_LengthToPixels(&height, parentHeight, emHeight, exHeight);
heightIsAuto = WEBC_FALSE;
marginBottomValue = GetPixelLength(CSS_PROPERTY_MARGIN_BOTTOM, parentWidth, emHeight, exHeight, 0);
topValue = parentHeight -
(borderTopValue +
paddingTopValue +
heightValue +
paddingBottomValue +
borderBottomValue +
marginBottomValue +
bottomValue);
break;
case TOP_KNOWN|BOTTOM_KNOWN:
// top = top
// bottom = bottom
// height = parentHeight - (top + bottom)
if (top.type == CSS_LENGTH_UNIT_PERCENT && parentHeightIsAuto)
{
topValue = autoIndentTop;
}
else
{
topValue = CSS_LengthToPixels(&top, parentHeight, emHeight, exHeight);
}
bottomValue = GetPixelLength(&bottom, parentHeight, emHeight, exHeight, 0);
marginTopValue = GetPixelLength(CSS_PROPERTY_MARGIN_TOP, parentWidth, emHeight, exHeight, 0);
marginBottomValue = GetPixelLength(CSS_PROPERTY_MARGIN_BOTTOM, parentWidth, emHeight, exHeight, 0);
heightValue = parentHeight -
(topValue +
marginTopValue +
borderTopValue +
paddingTopValue +
paddingBottomValue +
borderBottomValue +
marginBottomValue +
bottomValue);
heightIsAuto = WEBC_FALSE;
break;
}
if (width.type != CSS_LENGTH_UNIT_AUTO)
{
widthValue = CSS_LengthToPixels(&width, parentWidth, emHeight, exHeight);
WEBC_BOOL leftAligned = (textDirection == TU_DIR_RTL)?
(right.type == CSS_LENGTH_UNIT_AUTO && left.type != CSS_LENGTH_UNIT_AUTO) :
(left.type != CSS_LENGTH_UNIT_AUTO || right.type == CSS_LENGTH_UNIT_AUTO);
if (leftAligned)
{
// ignore right and margin-right
leftValue = GetPixelLength(&left, parentWidth, emHeight, exHeight, autoIndentLeft);
marginLeftValue = GetPixelLength(CSS_PROPERTY_MARGIN_LEFT, parentWidth, emHeight, exHeight, 0);
}
else
{
DISPLAY_INT marginRightValue;
// ignore left and margin-left
rightValue = GetPixelLength(&right, parentWidth, emHeight, exHeight, autoIndentRight);
marginRightValue = GetPixelLength(CSS_PROPERTY_MARGIN_RIGHT, parentWidth, emHeight, exHeight, 0);
leftValue = parentWidth -
(rightValue +
marginRightValue +
borderRightValue +
paddingRightValue +
widthValue +
paddingLeftValue +
borderLeftValue);
marginLeftValue = 0;
}
}
else
{
// width.type == CSS_LENGTH_UNIT_AUTO
// try to get the intrinsic width of the element. This might rely on the
// calculated height of the element; for example, in the case of an image with
// specified height and auto width, the aspect ratio of the source image determines
// the resulting intrinsic width.
DISPLAY_INT marginRightValue;
WEBC_BOOL hasIntrinsicWidth = GetIntrinsicWidth(&widthValue, heightValue, heightIsAuto);
if (left.type == CSS_LENGTH_UNIT_AUTO && right.type != CSS_LENGTH_UNIT_AUTO && hasIntrinsicWidth)
{
rightValue = GetPixelLength(&right, parentWidth, emHeight, exHeight, autoIndentRight);
marginRightValue = GetPixelLength(CSS_PROPERTY_MARGIN_RIGHT, parentWidth, emHeight, exHeight, 0);
marginLeftValue = 0;
leftValue = parentWidth -
(widthValue +
borderLeftValue +
paddingLeftValue +
paddingRightValue +
borderRightValue +
marginRightValue +
rightValue);
}
else
{
leftValue = GetPixelLength(&left, parentWidth, emHeight, exHeight, autoIndentLeft);
marginLeftValue = GetPixelLength(CSS_PROPERTY_MARGIN_LEFT, parentWidth, emHeight, exHeight, 0);
if (!hasIntrinsicWidth || (right.type != CSS_LENGTH_UNIT_AUTO && left.type != CSS_LENGTH_UNIT_AUTO))
{
// right and left are both non-auto, OR element has no intrinsic width:
// calculate left, right, and margins then extrapolate width
rightValue = GetPixelLength(&right, parentWidth, emHeight, exHeight, autoIndentRight);
marginRightValue = GetPixelLength(CSS_PROPERTY_MARGIN_RIGHT, parentWidth, emHeight, exHeight, 0);
widthValue = parentWidth -
(leftValue +
marginLeftValue +
borderLeftValue +
paddingLeftValue +
paddingRightValue +
borderRightValue +
marginRightValue +
rightValue);
// we don't want to stretch the width beyond what the maximum content
// width; only give the element as much space as it actually needs.
if (right.type == CSS_LENGTH_UNIT_AUTO || left.type == CSS_LENGTH_UNIT_AUTO)
{
// to speed this up, bail out of GetMaxWidth when we exceed widthValue
DISPLAY_INT maxWidth = GetMaxWidthSmallerThan(widthValue);
// NOTE: GetMaxWidth and GetMaxWidthSmallerThan return the total width
// of the element, including borders and padding. So we must subtract
// borders and padding to make it correspond to the contentWidth
maxWidth -= (borderLeftValue + paddingLeftValue + paddingRightValue + borderRightValue);
if (maxWidth < widthValue)
{
WEBC_BOOL leftAligned = (textDirection == TU_DIR_RTL)?
(right.type == CSS_LENGTH_UNIT_AUTO && left.type != CSS_LENGTH_UNIT_AUTO) :
(left.type != CSS_LENGTH_UNIT_AUTO || right.type == CSS_LENGTH_UNIT_AUTO);
if (!leftAligned)
{
// box is right-aligned
// adjust leftValue to account for the unused space
leftValue += (widthValue - maxWidth);
}
widthValue = maxWidth;
}
}
}
}
}
// Now format the content of this element
DISPLAY_INT contentHeight = FormatContentPositioned (
widthValue,
heightValue,
heightIsAuto,
borderLeftValue,
borderTopValue,
borderRightValue,
borderBottomValue,
paddingLeftValue,
paddingTopValue,
paddingRightValue,
paddingBottomValue
);
// Find the top edge and height
// NOTE: top and bottom percentages are relative to parent's HEIGHT, whereas
// margin-top and margin-bottom are relative to parent's WIDTH, except in the root
// context (tbd - handle this special case correctly)
switch (verticalCase)
{
case NOTHING_KNOWN:
case TOP_KNOWN:
heightValue = contentHeight;
break;
case BOTTOM_KNOWN:
// height = content height
// top = parentHeight - (height + bottom)
heightValue = contentHeight;
topValue = parentHeight -
(borderTopValue +
paddingTopValue +
heightValue +
paddingBottomValue +
borderBottomValue +
marginBottomValue +
bottomValue);
break;
}
rect.Set (0, 0,
borderLeftValue + paddingLeftValue + widthValue + paddingRightValue + borderRightValue - 1,
borderTopValue + paddingTopValue + heightValue + paddingBottomValue + borderBottomValue - 1
);
rect.MoveTo (
parentBorderLeft + leftValue + marginLeftValue,
parentBorderTop + topValue + marginTopValue
);
if (position == TU_POSITION_FIXED)
{
rect.Shift(containingBlock.left, containingBlock.top);
}
Move(&rect);
if (generateChildContext)
{
childContext = childContextFactory->newPositioned (
&rect,
heightIsAuto,
TU_DIR_LTR,
borderLeftValue,
borderTopValue,
borderRightValue,
borderBottomValue,
paddingLeftValue,
paddingTopValue,
paddingRightValue
);
}
}
return (childContext);
}