public void drawScroller(DrawCanvas canvas, Rect drawRegion, Rect contentsSize)
{
this.drawRegion = drawRegion;
this.contentsSize = contentsSize;
if (hideBars)
{
return;
}
if (yScrollEnabled())
{
ICanvasRectItem rectangle = new CanvasItemFactory().createCanvasRectItem();
rectangle.setColor(new Layout.Color(scrollerBrightness, scrollerBrightness, scrollerBrightness));
rectangle.setSize(scrollerWidth, scrollerHeight);
canvas.drawToCanvas(rectangle, drawRegion.Right - scrollerWidth - scrollerPadding, drawRegion.Top + scrollerPadding + getYScrollerYPos());
}
if (drawRegion.Width < contentsSize.Width)
{
ICanvasRectItem rectangle = new CanvasItemFactory().createCanvasRectItem();
rectangle.setColor(new Layout.Color(scrollerBrightness, scrollerBrightness, scrollerBrightness));
rectangle.setSize(scrollerHeight, scrollerWidth);
canvas.drawToCanvas(rectangle, drawRegion.Left + scrollerPadding + getXScrollerXPos(), drawRegion.Bottom - scrollerWidth - scrollerPadding);
}
}
public override void draw(DrawCanvas drawCanvas, Rect rect)
{
drawCanvas.enableClipping((int)rect.Left, (int)rect.Top, (int)rect.Width, (int)rect.Height);
ICanvasTextItem textCanvasItem = new CanvasItemFactory().createCanvasTextItem();
textCanvasItem.setText(text);
textCanvasItem.setTextColor(textColor);
textCanvasItem.setTextSize(textSize);
drawCanvas.drawToCanvas(textCanvasItem, rect.Left, rect.Top);
drawCanvas.disableClipping();
}
private void drawCursor(DrawCanvas drawCanvas, Rect bounds, double charWidth, double charHeight)
{
Point cursorPos = getTextPosForIndex(getCursorIndex());
cursorPos.X += bounds.Left; // Add textBox offset
cursorPos.Y += bounds.Top;
cursorPos.X += scroller.scrollX; // Add textBox offset
cursorPos.Y += scroller.scrollY;
ICanvasRectItem cursorRect = new CanvasItemFactory().createCanvasRectItem();
cursorRect.setColor(edgeColor);
cursorRect.setSize(CURSOR_WIDTH, charHeight - 2);
drawCanvas.drawToCanvas(cursorRect, cursorPos.X + 1, cursorPos.Y + 1);
}
private void drawCharecterHighlight(DrawCanvas canvas, char charecter, double x, double y, Color color)
{
if (color.a == 0)
{
return;
}
double selectionWidth = charecterDimensions.Width;
if (charecter == '\t')
{
selectionWidth *= tabSpaces;
}
ICanvasRectItem selection = new CanvasItemFactory().createCanvasRectItem();
selection.setColor(color);
selection.setSize(selectionWidth, charecterDimensions.Height);
canvas.drawToCanvas(selection, x, y);
}
public override void draw(DrawCanvas drawCanvas, Rect rect)
{
ICanvasRectItem edge = new CanvasItemFactory().createCanvasRectItem();
edge.setColor(edgeColor);
edge.setSize(rect.Width, rect.Height);
drawCanvas.drawToCanvas(edge, rect.Left, rect.Top);
if (rect.Width - 2 * BORDER_SIZE < 0 || rect.Height - 2 * BORDER_SIZE < 0)
{
return;
}
Rect textRegion = new Rect(new Point(rect.Left + BORDER_SIZE, rect.Top + BORDER_SIZE), new Size(rect.Width - 2 * BORDER_SIZE, rect.Height - 2 * BORDER_SIZE));
drawCanvas.enableClipping((int)textRegion.Left, (int)textRegion.Top, (int)textRegion.Width, (int)textRegion.Height);
ICanvasRectItem background = new CanvasItemFactory().createCanvasRectItem();
background.setColor(backgroundColor);
background.setSize(textRegion.Width, textRegion.Height);
drawCanvas.drawToCanvas(background, textRegion.X, textRegion.Y);
calcualteAllTextPositions();
previousBounds = new Rect(new Point(textRegion.X, textRegion.Y), new Size(textRegion.Width, textRegion.Height));
int selectionStartIndex = Math.Min(selectionBeganIndex, cursorIndex);
int selectionEndIndex = Math.Max(selectionBeganIndex, cursorIndex);
for (int i = 0; i < displayText.Length; i++)
{
if (displayText[i] == '\r' || displayText[i] == '\n')
{
continue;
}
Point letterPos = getTextPosForIndex(i);
letterPos.X += textRegion.Left; // Add textBox offset
letterPos.Y += textRegion.Top;
letterPos.X += scroller.scrollX; // Add textBox offset
letterPos.Y += scroller.scrollY;
if (letterPos.X + charecterDimensions.Width < 0)
{
continue;
}
if (letterPos.Y + charecterDimensions.Height < 0)
{
continue;
}
if (letterPos.X > textRegion.Width)
{
continue;
}
if (letterPos.Y > textRegion.Height + rect.Top)
{
continue;
}
if ((i >= selectionStartIndex && i < selectionEndIndex)) // Draw cursor selection
{
drawCharecterHighlight(drawCanvas, displayText[i], letterPos.X, letterPos.Y, edgeColor);
}
else
{
drawCharecterHighlight(drawCanvas, displayText[i], letterPos.X, letterPos.Y, contents.getColorForCharAtIndex(i));
}
if (displayText[i] != '\t')
{
ICanvasTextItem letterCanvasItem = new CanvasItemFactory().createCanvasTextItem();
letterCanvasItem.setText(displayText[i] + "");
drawCanvas.drawToCanvas(letterCanvasItem, letterPos.X, letterPos.Y);
}
}
if (singleLine)
{
scroller.hideBars = true;
}
scroller.drawScroller(drawCanvas, textRegion, new Rect(new Size(maxXPos + charecterDimensions.Width, maxYPos + charecterDimensions.Height)));
drawCanvas.disableClipping();
}