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(svn r27713) -Fix [FS#6527]: Setup clipping areas for individual widgets when drawing. (adf88)

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frosch 2016-12-25 17:57:47 +00:00
parent 3419bff4ed
commit f882a5aa00
1 changed files with 12 additions and 3 deletions
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15
src/widget.cpp
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@ -2393,15 +2393,22 @@ void NWidgetLeaf::Draw(const Window *w)
{
if (this->current_x == 0 || this->current_y == 0) return;
/* Setup a clipping rectangle... */
DrawPixelInfo new_dpi;
if (!FillDrawPixelInfo(&new_dpi, this->pos_x, this->pos_y, this->current_x, this->current_y)) return;
/* ...but keep coordinates relative to the window. */
new_dpi.left += this->pos_x;
new_dpi.top += this->pos_y;
DrawPixelInfo *old_dpi = _cur_dpi;
_cur_dpi = &new_dpi;
Rect r;
r.left = this->pos_x;
r.right = this->pos_x + this->current_x - 1;
r.top = this->pos_y;
r.bottom = this->pos_y + this->current_y - 1;
const DrawPixelInfo *dpi = _cur_dpi;
if (dpi->left > r.right || dpi->left + dpi->width <= r.left || dpi->top > r.bottom || dpi->top + dpi->height <= r.top) return;
bool clicked = this->IsLowered();
switch (this->type) {
case WWT_EMPTY:
@ -2512,6 +2519,8 @@ void NWidgetLeaf::Draw(const Window *w)
if (this->IsDisabled()) {
GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, _colour_gradient[this->colour & 0xF][2], FILLRECT_CHECKER);
}
_cur_dpi = old_dpi;
}
/**