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semi-working vertical slider

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This commit is contained in:
Alessandro Mauri 2024-11-17 21:36:46 +01:00
parent 763e9ba8d6
commit 73bc933eb5
7 changed files with 188 additions and 87 deletions
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76
src/ugui_div.c3
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@ -1,5 +1,6 @@
module ugui;
import std::io;
fn void! Ctx.div_begin(&ctx, String label, Rect size)
{
@ -29,18 +30,18 @@ fn void! Ctx.div_begin(&ctx, String label, Rect size)
.x = c_elem.bounds.x,
.y = c_elem.bounds.y,
};
c_elem.div.color_bg = uint_to_rgba(0xff0000ff);
c_elem.div.origin_r = c_elem.div.origin_c;
c_elem.div.can_scroll_x = false;
c_elem.div.can_scroll_y = false;
c_elem.div.vertical_scroll_bar = -1;
c_elem.div.horizontal_scroll_bar = -1;
c_elem.div.color_bg = uint_to_rgba(0xff0000ff);
c_elem.div.scroll.can_x = false;
c_elem.div.scroll.can_y = false;
c_elem.div.scroll.value_x = 0;
c_elem.div.scroll.value_y = 0;
}
// Add the background to the draw stack
Cmd cmd = {
.type = CMD_RECT,
.rect = {
.type = CMD_RECT,
.rect = {
.rect = c_elem.bounds,
.color = c_elem.div.color_bg,
},
@ -50,7 +51,66 @@ fn void! Ctx.div_begin(&ctx, String label, Rect size)
// TODO: check active
// TODO: check resizeable
// TODO: check scrollbars
// check and draw scroll bars
if (!rect_contains(c_elem.bounds, c_elem.div.children_bounds)) {
Point cbc = {
.x = c_elem.div.children_bounds.x + c_elem.div.children_bounds.w,
.y = c_elem.div.children_bounds.y + c_elem.div.children_bounds.h,
};
Point bc = {
.x = c_elem.bounds.x + c_elem.bounds.w,
.y = c_elem.bounds.y + c_elem.bounds.h,
};
// vertical overflow, check and draw scroll bar
if (cbc.y > bc.y && c_elem.div.scroll.can_y) {
// set the scrollbar flag, is used in layout
c_elem.div.scroll.on_y = true;
Rect vslider = {
.x = c_elem.bounds.x + c_elem.bounds.w - 10,
.y = c_elem.bounds.y,
.w = 10,
.h = c_elem.bounds.h,
};
float vh = max((float)bc.y / cbc.y, (float)0.15);
Rect vhandle = {
.x = c_elem.bounds.x + c_elem.bounds.w - 10,
.y = (short)(c_elem.bounds.y + (int)(c_elem.bounds.h*(1-vh) * c_elem.div.scroll.value_y)),
.w = 10,
.h = (short)(c_elem.bounds.h * vh),
};
c_elem.events = ctx.get_elem_events(c_elem);
if (parent.flags.has_focus && c_elem.events.mouse_hover && c_elem.events.mouse_hold && point_in_rect(ctx.input.mouse.pos, vhandle)) {
short y = (short)clamp(ctx.input.mouse.pos.y - vhandle.h/2, vslider.y, vslider.y + vslider.h - vhandle.h);
vhandle.y = y;
float v = (float)(vhandle.y-vslider.y) / (float)(vslider.h-vhandle.h);
c_elem.div.scroll.value_y = v;
c_elem.flags.updated = true;
c_elem.div.origin_c = Point{
.x = c_elem.bounds.x,
.y = c_elem.bounds.y,
};
c_elem.div.origin_r = c_elem.div.origin_c;
}
Cmd scrl = {
.type = CMD_RECT,
.rect.rect = vslider,
.rect.color = uint_to_rgba(0x999999ff),
};
ctx.cmd_queue.enqueue(&scrl)!;
scrl.rect.rect = vhandle;
scrl.rect.color = uint_to_rgba(0x9999ffff);
ctx.cmd_queue.enqueue(&scrl)!;
} else {
c_elem.div.scroll.on_y = false;
}
}
// if the bounds are outside of the view then allocate space for scrollbars
DivLayout old_layout = c_elem.div.layout;
c_elem.div.layout = LAYOUT_FLOATING;