void DisplayElement::GetBounds (WebRect *rect)
{
if (mFlags & DISPLAY_FLAG_BOUNDS_VALID)
{
*rect = mBounds;
return;
}
*rect = mRect;
WebRect childRect;
DisplayElement *pChild = mpFirstChild;
while (pChild)
{
if (!(pChild->mFlags & DISPLAY_FLAG_FIXED_POS))
{
pChild->GetBounds(&childRect);
childRect.Shift(mRect.left, mRect.top);
rect->Or(&childRect);
}
pChild = pChild->mpNext;
}
SetFlag(DISPLAY_FLAG_BOUNDS_VALID);
mBounds = *rect;
}
void DisplayElement::InvalidateChild (DisplayElement *pChild, WebRect *pDirty)
{
WebRect dirty;
dirty.Set(pDirty);
dirty.Shift(mRect.left, mRect.top);
if (GetOverflow() == DISPLAY_OVERFLOW_HIDDEN)
{
WebRect clipRect;
GetClipRect(&clipRect);
// If completely outside clipping rect, stop here
if (!dirty.Overlaps(&clipRect))
{
return;
}
// clip pDirty to our rect
dirty.And(&clipRect);
}
if ((mFlags & DISPLAY_FLAG_FIXED_POS) || !mpParent)
{
DisplayManager *pManager = GetManager();
if (pManager)
{
if (mFlags & DISPLAY_FLAG_FIXED_POS)
{
dirty.Shift(pManager->mViewRect.left, pManager->mViewRect.top);
}
pManager->InvalidateViewportRegion(&dirty);
}
}
else
{
mpParent->InvalidateChild(this, &dirty);
}
}
/*---------------------------------------------------------------------------*/
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);
}
void WebEditBox::DrawThisOnly (DISPLAY_INT x, DISPLAY_INT y, WebGraphics *gc)
{
WebChar c;
long line;
WebRect box;
GetFrameRect(&box);
box.Shift(x,y);
// gc->StartBuffer(); // begin buffering graphics commands
gc->Rectangle(&box, GetBgColor(gc), GetBgColor(gc), 1); // draw background
DrawFrame(&box, gc);
// save the current graphics context clip rectangle and set clipping to the
// text display region of the widget
GetTextRect(&box);
box.Shift(x,y);
WebRect clipSave;
gc->GetClip(&clipSave);
if (clipSave.Overlaps(&box))
{
WebRect clip(box);
clip.And(&clipSave);
gc->SetClip(&clip);
miXOffset = (mpHScroll)? mpHScroll->GetPosition() : 0;
miYOffset = (mpVScroll)? mpVScroll->GetPosition() : 0;
// render our text
WebFont font = mFont.GetFont();
if (mpText && font)
{
// this loop draws up to the last line
for (line=0; line<(miNumLines-1); line++)
{
c = mpText[GetLineOffset(line+1)];
mpText[GetLineOffset(line+1)] = 0;
DrawText(gc, box.left - miXOffset, box.top - miYOffset + (line * WEB_FONT_HEIGHT(font)),
mpText + GetLineOffset(line), GetTextColor(gc), 0, 0, font);
mpText[GetLineOffset(line+1)] = c;
}
// now draw the last line of text.
DrawText(gc, box.left - miXOffset, box.top - miYOffset + (line*WEB_FONT_HEIGHT(font)),
mpText + GetLineOffset(line), GetTextColor(gc), 0, 0, font);
// if we have the focus, draw the cursor
if ((mFlags & DISPLAY_FLAG_FOCUS) && !(mFlags & DISPLAY_FLAG_DISABLED))
{
// now render the selected portion in reverse video (if we have one)
if (mEditFlags & EDIT_FLAG_HAS_SELECTION)
{
long begin = EBSMIN(miCursorPos, miSelectBegin);
long end = EBSMAX(miCursorPos, miSelectBegin);
long beginLine = FindLine(begin), endLine = FindLine(end);
DISPLAY_INT textLeft;
long currentBegin, currentEnd;
for (line=beginLine; line<=endLine; line++)
{
currentBegin = EBSMAX(begin, GetLineOffset(line));
if (line == endLine)
{
currentEnd = end;
}
else
{
currentEnd = EBSMIN(end, GetLineOffset(line+1));
}
textLeft = gc->TextWidthLen(mpText + GetLineOffset(line), font, EBSMAX(0, begin - GetLineOffset(line)));
c = mpText[currentEnd];
mpText[currentEnd] = 0;
DrawText(gc, box.left - miXOffset + textLeft,
box.top - miYOffset + (line*WEB_FONT_HEIGHT(font)),
mpText + currentBegin, GetBgColor(gc), GetSelectColor(gc), 1, font);
mpText[currentEnd] = c;
}
}
DISPLAY_INT cursorX = box.left - miXOffset +
gc->TextWidthLen(mpText + GetLineOffset(miCurrentLine), font, miCursorPos - GetLineOffset(miCurrentLine)) ;
box.Set(cursorX, box.top - miYOffset + WEB_FONT_HEIGHT(font)*miCurrentLine,
cursorX, box.top - miYOffset + WEB_FONT_HEIGHT(font)*(miCurrentLine+1));
gc->Rectangle(&box, GetSelectColor(gc), GetSelectColor(gc), 1);
}
}
gc->SetClip(&clipSave); // restore the clip rectangle
} // if clip overlaps
/* if (mpVScroll && mpHScroll)
{
GetCornerRect(&box);
box.Shift(x,y);
gc->Rectangle(&box, LIGHTGRAY, LIGHTGRAY, 1);
}*/
// gc->EndBuffer(); // send all buffered commands to the display
}
void DisplayManager::Draw(DISPLAY_INT x, DISPLAY_INT y, WebRect *pViewport, WebGraphics *pGC)
{
if (mNoRefresh)
{
DisplayManager* parentDisplayManager = GetManager();
if (parentDisplayManager)
{
// This handles the case where a DisplayManager that is NOT the root
// DisplayManager has a positive refresh lock, prohibiting its being
// drawn, but the parent DisplayManager does not (otherwise we would
// not even be in our Draw method); in this case:
//
// IF this element is within the collective invalid region being
// painted, THEN we want to re-invalidate the invalid part of (this),
// which will cause said region to re-paint when the refresh lock
// is removed from this element and this->Refresh is eventually called.
WebRect clipRect;
pGC->GetClip(&clipRect);
WebRect screenRect(mRect);
screenRect.MoveTo(x,y);
if (clipRect.Overlaps(&screenRect))
{
SetManagerFlag(MANAGER_FLAG_TRIED_TO_DRAW);
//screenRect.And(&clipRect);
//screenRect.Shift(-pViewport->left, -pViewport->top);
//parentDisplayManager->InvalidateViewportRegion(&screenRect);
}
}
return;
}
FormatResult result;
switch (GetScrollMode())
{
case SCROLL_MODE_NONE:
if (mpVScroll || mpHScroll)
{
DetachVScroll();
DetachHScroll();
UpdateViewport();
}
break;
case SCROLL_MODE_HSCROLL:
if (mpVScroll || !mpHScroll)
{
DetachVScroll();
AttachHScroll();
UpdateViewport();
}
break;
case SCROLL_MODE_VSCROLL:
if (!mpVScroll || mpHScroll)
{
AttachVScroll();
DetachHScroll();
UpdateViewport();
}
break;
case SCROLL_MODE_BOTH:
if (!mpVScroll || !mpHScroll)
{
AttachVScroll();
AttachHScroll();
UpdateViewport();
}
break;
case SCROLL_MODE_AUTO:
break;
}
if (mRoot.Get())
{
int i = 0;
do
{
result = mRoot.Get()->FormatForViewport(&mViewRect, (mpHScroll != 0), (mpVScroll != 0));
if (GetScrollMode() == SCROLL_MODE_AUTO)
{
if (result == DISPLAY_FORMAT_NEEDS_VSCROLL)
{
// create a vscroll bar
if (mpVScroll)
{
// what the... we already have a vscroll bar!
break;
}
AttachVScroll();
// check for creation failure - may indicate low memory condition
if (!mpVScroll)
{
// can't go on...
break;
}
UpdateViewport();
}
else if (result == DISPLAY_FORMAT_NEEDS_HSCROLL)
{
// create a hscroll bar
if (mpHScroll)
{
// what the... we already have a hscroll bar!
break;
}
AttachHScroll();
// check for creation failure - may indicate low memory condition
if (!mpHScroll)
{
// can't go on...
break;
}
UpdateViewport();
}
}
else
{
break;
}
// put a hard upper bound on the number of times we try to re-format
// (4, since this means we've covered all combinations of horizontal
// and vertical scroll bars on the window)
i++;
}
while (result != DISPLAY_FORMAT_SUCCESS && i < 5);
if (GetScrollMode() == SCROLL_MODE_AUTO)
{
WebRect rootBounds;
GetRootBounds(&rootBounds);
if (rootBounds.Height() <= mViewRect.Height() && mpVScroll)
{
DetachVScroll();
UpdateViewport();
mRoot.Get()->FormatForViewport(&mViewRect, (mpHScroll != 0), (mpVScroll != 0));
GetRootBounds(&rootBounds);
}
if (rootBounds.Width() <= mViewRect.Width() && mpHScroll)
{
DetachHScroll();
UpdateViewport();
mRoot.Get()->FormatForViewport(&mViewRect, (mpHScroll != 0), (mpVScroll != 0));
GetRootBounds(&rootBounds);
}
if (rootBounds.Height() <= mViewRect.Height() && mpVScroll)
{
DetachVScroll();
UpdateViewport();
mRoot.Get()->FormatForViewport(&mViewRect, (mpHScroll != 0), (mpVScroll != 0));
GetRootBounds(&rootBounds);
}
}
mViewportChanged = WEBC_FALSE;
CorrectViewportPosition();
if (mpFocus && (mpVScroll!=0) && (mpHScroll!=0))
{
WebRect focusRect;
WebRect elemRect;
WEBC_BOOL ensureFocusVisible = mpFocus->GetFocusRect (&focusRect);
if (ensureFocusVisible)
{
GetElementRect(&elemRect, mpFocus);
focusRect.Shift(elemRect.left, elemRect.top);
// this will adjust the scroll bars so that the given rect is in view
EnsureRectVisible(&focusRect);
}
}
}
DisplayElement::Draw(x, y, pViewport, pGC);
}
void WebDropBox::Drop(void)
{
WEBC_ASSERT(GetManager());
if (mState == DROPBOX_STATE_DROPPED)
{
return;
}
int spaceUp, spaceDown;
CalculateAvailableSpace(&spaceUp, &spaceDown);
int neededSpace = mListbox.GetTotalTextHeight() +
mListbox.GetMargin() + mListbox.GetPadding() * 2 +
mListbox.GetBorder() * 2;
WebRect rect;
if (spaceDown >= neededSpace || spaceDown > spaceUp)
{
DISPLAY_INT space = EBSMIN(spaceDown, neededSpace);
rect.top = Height() - DROPBOX_MARGIN;
rect.left = DROPBOX_MARGIN;
rect.right = Width() - DROPBOX_MARGIN - 1;
rect.bottom = rect.top + space - 1;
}
else
{
DISPLAY_INT space = EBSMIN(spaceUp, neededSpace);
rect.top = -space;
rect.left = DROPBOX_MARGIN;
rect.right = Width() - DROPBOX_MARGIN - 1;
rect.bottom = DROPBOX_MARGIN - 1;
}
SetFlag(DISPLAY_FLAG_DIRTY);
Invalidate();
mState = DROPBOX_STATE_DROPPED;
if (mpParent)
{
DISPLAY_INT left,top;
mpParent->GetDisplayPosition(this, &left, &top);
rect.Shift(left,top);
}
mListbox.Move(&rect);
DisplayManager *m = GetManager();
WebGraphics *gc = m? m->GetGraphics() : 0;
if (gc)
{
mListbox.SetupScrollBars(gc);
}
// we need to make sure the list box appears on top of everything.
DisplayElement *parent = this;
while (parent->mpParent)
{
parent = parent->mpParent;
}
parent->InsertLast(&mListbox);
mListbox.Invalidate();
}
void WebDropBox::DrawThisOnly (DISPLAY_INT x, DISPLAY_INT y, WebGraphics *gc)
{
WEBC_BOOL focused = (mFlags & DISPLAY_FLAG_FOCUS) || (mState == DROPBOX_STATE_DROPPED);
mListbox.CalculateTextMetrics(gc);
WebRect oldClip;
gc->GetClip(&oldClip);
WebRect clip;
clip.top = y;
clip.left = x;
clip.bottom = y + Height() - 1;
clip.right = x + Width() - 1;
clip.And(&oldClip);
gc->SetClip(&clip);
WebRect rect;
rect.top = y;
rect.left = x;
rect.bottom = y + Height() - 1;
rect.right = x + Width() - 1;
// gc->StartBuffer();
WebColor hilite, lolite, blue, white, black;
HTMLColor col = HTML_RGBAToColor(0,0,0,0);
black = hilite = gc->RGBToColor(col);
col = HTML_RGBAToColor(0xff,0xff,0xff,0);
white = lolite = gc->RGBToColor(col);
col = HTML_RGBAToColor(0,0,0xff,0);
blue = gc->RGBToColor(col);
if (focused)
{
gc->Rectangle(&rect, black, black, WEBC_FALSE);
}
GetFrameRect(&rect);
rect.Shift(x,y);
DrawFrame(&rect, gc);
GetContentRect(&rect);
rect.Shift(x,y);
if (focused)
{
gc->Rectangle(&rect, GetSelectColor(gc), GetSelectColor(gc), WEBC_TRUE);
}
else
{
gc->Rectangle(&rect, GetBgColor(gc), GetBgColor(gc), WEBC_TRUE);
}
if (mpText && mFont.GetFont())
{
DISPLAY_INT offset = (rect.Height() - gc->TextHeight(mpText, mFont.GetFont())) / 2;
clip.Set(&rect);
clip.And(&oldClip);
gc->SetClip(&clip);
gc->Text(rect.left + DROPBOX_PADDING,
rect.top + DROPBOX_PADDING + offset,
mpText, (focused) ? GetBgColor(gc) : GetTextColor(gc),
0, WEBC_FALSE, mFont.GetFont());
}
// gc->EndBuffer();
gc->SetClip(&oldClip);
}