void MVScrollBar::update()
/****************************************************************************
*
* Function: MVScrollBar::update
*
* Description: Updates the state of the scroll bar thumb, if the scroll
* bar is visible.
*
****************************************************************************/
{
if ((flags & sbInteracting) || !(flags & sbDirty))
return;
if ((state & sfVisible) && (state & sfExposed)) {
setupOwnerViewport();
MS_obscure();
if (flags & sbDirtyLeft)
drawLeftArrow(false);
if (flags & sbDirtyRight)
drawRightArrow(false);
if (flags & sbDirtyThumb)
drawThumb(-1);
MS_show();
resetViewport();
}
}
void MVListBase::drawCell(int i,int j)
/****************************************************************************
*
* Function: MVListBase::drawCell
* Parameters: i,j - Location of the cell to draw
*
* Description: Draws the cell, clipped to the bounds of the list. This
* routine assumes that the list is entirely visible.
*
****************************************************************************/
{
MS_obscure();
if (visible.includes(i,j)) {
// Compute the bounding box for the cell
int dx = (i-visible.left()) * cellSize.x;
int dy = (j-visible.top()) * cellSize.y;
MVRect r(bounds.left()+leftIndent+dx,
bounds.top()+topIndent+dy,
bounds.left()+leftIndent+dx+cellSize.x,
bounds.top()+topIndent+dy+cellSize.y);
r &= MVRect(bounds.left()+leftIndent,
bounds.top()+topIndent,
bounds.right()-rightIndent,
bounds.bottom()-botIndent);
if (!r.isEmpty()) {
dc.setClipRect(r);
drawCell(i,j,r);
}
}
MS_show();
}
void MVListBase::vScrollTo(int j,ibool redraw)
/****************************************************************************
*
* Function: MVListBase::vScrollTo
* Parameters: j - New cell to scroll to in vertical direction
* redraw - True if list should be redrawn
*
* Description: Scrolls the list to start at the new cell 'j' in the
* vertical direction, redrawing all necessary cells to do
* this.
*
]****************************************************************************/
{
if (visible.top() != j) {
// Setup the viewport for redrawing the list directly, and redraw
// it.
MVRect v(visible & range);
MVRect b(bounds.left()+leftIndent,
bounds.top()+topIndent,
bounds.left()+leftIndent+cellSize.x*(visible.right()-visible.left()),
bounds.top()+topIndent+cellSize.y*(visible.bottom()-visible.top()));
int dy = (v.top() - j) * cellSize.y;
if (b.right() > (bounds.right()-rightIndent))
b.right() = bounds.right()-rightIndent;
if (b.bottom() > (bounds.bottom()-botIndent))
b.bottom() = bounds.bottom()-botIndent;
visible.moveTo(hScroll ? hScroll->getValue() : 0,j);
vScroll->setValue(j);
if (redraw) {
CHECK(owner != NULL);
setupOwnerViewport();
MS_obscure();
if (j < v.top()) {
b.bottom() -= dy;
if (!b.isEmpty())
dc.bitBlt(dc,b,b.left(),bounds.top()+topIndent+dy,MGL_REPLACE_MODE);
for (int y = j; y < v.top(); y++)
for (int x = v.left(); x < v.right(); x++)
drawCell(x,y);
}
else {
b.top() -= dy;
if (!b.isEmpty())
dc.bitBlt(dc,b,b.left(),bounds.top()+topIndent,MGL_REPLACE_MODE);
j -= v.top();
for (int y = 0; y < j; y++)
for (int x = v.left(); x < v.right(); x++)
drawCell(x,v.bottom()+y);
}
MS_show();
resetViewport();
}
}
}
void MVScrollBar::drawThumb(int which)
/****************************************************************************
*
* Function: MVScrollBar::drawThumb
* Parameters: which - Which part of bar to highlight.
*
* Description: Draws the thumb portion of the scroll bar, highlighting
* the specific portion of the scroll bar.
*
****************************************************************************/
{
MS_obscure();
if (maxVal == minVal) {
dc.setColor(getColor(scScrollBarInterior));
dc.fillRect(thumb);
}
else {
attributes_t attr;
dc.getAttributes(attr);
dc.setColor(getColor(scScrollBarInterior));
dc.setPenStyle(MGL_BITMAP_OPAQUE);
dc.setPenBitmapPattern(0,MGL_GRAY_FILL);
dc.usePenBitmapPattern(0);
if (vertical) {
dc.setBackColor(getColor(
which == (int)sbPageLeft ? scSelectScrollBar : scUnselectScrollBar));
dc.fillRect(thumb.left(),leftArrow.bottom(),
thumb.right(),thumb.top());
dc.setBackColor(getColor(
which == (int)sbPageRight ? scSelectScrollBar : scUnselectScrollBar));
dc.fillRect(thumb.left(),thumb.bottom(),
thumb.right(),rightArrow.top());
}
else {
dc.setBackColor(getColor(
which == (int)sbPageLeft ? scSelectScrollBar : scUnselectScrollBar));
dc.fillRect(leftArrow.right(),thumb.top(),
thumb.left(),thumb.bottom());
dc.setBackColor(getColor(
which == (int)sbPageRight ? scSelectScrollBar : scUnselectScrollBar));
dc.fillRect(thumb.right(),thumb.top(),
rightArrow.left(),thumb.bottom());
}
dc.setPenStyle(MGL_BITMAP_SOLID);
dc.fillRect(thumb);
MV_drawBorder(thumb,(which == (int)sbThumb ? MV_BDR_INSET : MV_BDR_OUTSET),1);
dc.restoreAttributes(attr);
}
MS_show();
flags &= ~sbDirtyThumb;
}
void MVListBase::hScrollTo(int i,ibool redraw)
/****************************************************************************
*
* Function: MVListBase::hScrollTo
* Parameters: i - New cell to scroll to in horizontal direction
* redraw - True if list should be redrawn
*
* Description: Scrolls the list to start at the new cell 'i' in the
* horizontal direction, redrawing all necessary cells to do
* this.
*
****************************************************************************/
{
if (visible.left() != i) {
// Setup the viewport for redrawing the list directly, and redraw
// it.
MVRect v(visible & range);
MVRect b(bounds.left()+leftIndent,
bounds.top()+topIndent,
bounds.right()-rightIndent,
bounds.bottom()-botIndent);
int dx = (v.left() - i) * cellSize.x;
visible.moveTo(i,vScroll ? vScroll->getValue() : 0);
hScroll->setValue(i);
if (redraw) {
CHECK(owner != NULL);
setupOwnerViewport();
MS_obscure();
if (i < v.left()) {
b.right() -= dx;
if (!b.isEmpty())
dc.bitBlt(dc,b,bounds.left()+leftIndent+dx,b.top(),MGL_REPLACE_MODE);
for (int y = v.top(); y < v.bottom(); y++)
for (int x = i; x < v.left(); x++)
drawCell(x,y);
}
else {
b.left() -= dx;
if (!b.isEmpty())
dc.bitBlt(dc,b,bounds.left()+leftIndent,b.top(),MGL_REPLACE_MODE);
i -= v.left();
for (int y = v.top(); y < v.bottom(); y++)
for (int x = 0; x < i; x++)
drawCell(v.right() + x,y);
}
MS_show();
resetViewport();
}
}
}
void MVListBase::refresh()
/****************************************************************************
*
* Function: MVListBase::refresh
*
* Description: Refreshes the list by refreshing each of the visible cells.
*
****************************************************************************/
{
MVRect v(visible & range);
MS_obscure();
for (int i = v.left(); i < v.right(); i++)
for (int j = v.top(); j < v.bottom(); j++)
refreshCell(i,j);
MS_show();
}
void MVRenderArea::paint()
/****************************************************************************
*
* Function: MVRenderArea::paint
*
* Description: This function paints the view with the current clip
* region. We set the viewport to the coordinate space for
* the view and then call the render function clipping to
* each of the clip rectangles in the clip region.
*
****************************************************************************/
{
MS_obscure();
setupViewport();
clipAndRenderView = this;
clipRgn.traverse(clipAndRender);
resetViewport();
MS_show();
}
void MVScrollBar::drawRightArrow(ibool down)
/****************************************************************************
*
* Function: MVScrollBar::drawRightArrow
* Parameters: down - True if arrow is pressed down
*
* Description: Draw's the right/bottom arrow portion of the scroll bar. Assume
* the outer border for the scroll bar exists, and the
* border colors are set up.
*
****************************************************************************/
{
MS_obscure();
dc.setColor(getColor(scScrollBarInterior));
dc.fillRect(rightArrow);
MV_drawBorder(rightArrow,down ? MV_BDR_INSET : MV_BDR_OUTSET,1);
dc.setColor(getColor(
value < maxVal ? scActiveScrollArrow : scInactiveScrollArrow));
int cx = down + (rightArrow.left() + rightArrow.right()-1)/2;
int cy = down + (rightArrow.top() + rightArrow.bottom()-1)/2;
if (vertical) {
// Draw the bottom arrow
dc.line(cx-3,cy-1,cx,cy+2);
dc.line(cx+1,cy+2,cx+4,cy-1);
dc.line(cx-2,cy-1,cx,cy+1);
dc.line(cx+1,cy+1,cx+3,cy-1);
}
else {
// Draw the right arrow
dc.line(cx-1,cy-3,cx+2,cy);
dc.line(cx+2,cy+1,cx-1,cy+4);
dc.line(cx-1,cy-2,cx+1,cy);
dc.line(cx+1,cy+1,cx-1,cy+3);
}
MS_show();
flags &= ~sbDirtyRight;
}
void MVScrollBar::draw(const MVRect&)
/****************************************************************************
*
* Function: MVScrollBar::draw
* Parameters: clip - Clipping rectangle to use when drawing
*
* Description: Draws the scroll bar in the current state.
*
****************************************************************************/
{
if (flags & sbInteracting)
return;
// Draw the main body of the scroll bar inset into the screen
MS_obscure();
MV_setBorderColors(getColor(scHighlight),getColor(scShadow));
MV_drawBorder(bounds,MV_BDR_INSET,1);
drawLeftArrow(false);
drawRightArrow(false);
drawThumb(-1);
MS_show();
}
void MVListBase::draw(const MVRect&)
/****************************************************************************
*
* Function: MVListBase::draw
* Parameters: clip - Clipping rectangle to use when drawing
*
* Description: Draws the representation of the list.
*
****************************************************************************/
{
MS_obscure();
MVRect clipBounds(bounds.left()+leftIndent,
bounds.top()+topIndent,
bounds.right()-rightIndent,
bounds.bottom()-rightIndent);
// Clear the background for the list
dc.setColor(getColor(scListInterior));
dc.fillRect(bounds);
MV_setBorderColors(getColor(scShadow),getColor(scHighlight));
MV_drawBorder(bounds,MV_BDR_OUTSET,1);
MV_setBorderColors(getColor(scBlack),getColor(scButtonFace));
MV_drawBorder(bounds.insetBy(1,1),MV_BDR_OUTSET,1);
// Draw each of the items in the list. Note that we set up the clip
// rectangle to clip everything to the bounds of the list correctly,
// and that we only draw those items that are visible and within the
// range of selectable items.
MVRect v(visible & range);
MVRect start(bounds.left()+leftIndent,
bounds.top()+topIndent,
bounds.left()+leftIndent+cellSize.x,
bounds.top()+topIndent+cellSize.y);
for (int i = v.left(); i < v.right(); i++) {
MVRect r(start);
for (int j = v.top(); j < v.bottom(); j++) {
MVRect c(r);
c &= clipBounds;
if (!c.isEmpty()) {
dc.setClipRect(c);
drawCell(i,j,r);
}
r.top() += cellSize.y; r.bottom() += cellSize.y;
}
start.left() += cellSize.x; start.right() += cellSize.x;
}
if (range.isEmpty()) {
// There is nothing to draw in the list (it is currently empty),
// but if the list is selected then we should draw a dotted outline
// around the first empty cell to ensure the user knows when the
// list is selected.
if ((state & sfFocused)) {
attributes_t attr;
dc.getAttributes(attr);
dc.setColor(getColor(scListCell));
dc.setPenStyle(MGL_BITMAP_TRANSPARENT);
dc.setPenBitmapPattern(0,MGL_GRAY_FILL);
dc.usePenBitmapPattern(0);
drawRect(bounds.left()+leftIndent,
bounds.top()+topIndent,
bounds.left()+leftIndent+cellSize.x,
bounds.top()+topIndent+cellSize.y);
dc.restoreAttributes(attr);
}
}
MS_show();
}
wxScreenDC::~wxScreenDC()
{
MS_show();
}
