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core: scroll the surface when mouse is pulled above or below surface

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This commit is contained in:
Mitchell Hashimoto
2023-03-21 20:39:23 -07:00
parent bf699dd381
commit 35fe74e599
1 changed files with 15 additions and 5 deletions
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20
src/Surface.zig
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@ -1657,17 +1657,27 @@ pub fn cursorPosCallback(
// All roads lead to requiring a re-render at this pont.
try self.queueRender();
// Convert to pixels from screen coords
const xpos = pos.x;
const ypos = pos.y;
// If our y is negative, we're above the window. In this case, we scroll
// up. The amount we scroll up is dependent on how negative we are.
// Note: one day, we can change this from distance to time based if we want.
//log.warn("CURSOR POS: {} {}", .{ pos, self.screen_size });
const max_y = @intToFloat(f32, self.screen_size.height);
if (pos.y < 0 or pos.y > max_y) {
const delta: isize = if (pos.y < 0) -1 else 1;
try self.io.terminal.scrollViewport(.{ .delta = delta });
// TODO: We want a timer or something to repeat while we're still
// at this cursor position. Right now, the user has to jiggle their
// mouse in order to scroll.
}
// Convert to points
const viewport_point = self.posToViewport(xpos, ypos);
const viewport_point = self.posToViewport(pos.x, pos.y);
const screen_point = viewport_point.toScreen(&self.io.terminal.screen);
// Handle dragging depending on click count
switch (self.mouse.left_click_count) {
1 => self.dragLeftClickSingle(screen_point, xpos),
1 => self.dragLeftClickSingle(screen_point, pos.x),
2 => self.dragLeftClickDouble(screen_point),
3 => self.dragLeftClickTriple(screen_point),
else => unreachable,