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corner-aware cursor testing

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jacob 2025-11-04 01:07:17 -06:00
parent b3779981bd
commit 0819655322
2 changed files with 32 additions and 9 deletions
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40
src/ui/ui_core.c
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@ -503,6 +503,30 @@ void UI_SetBackgroundTexture(UI_Box *box, GPU_Resource *texture, Vec2 uv0, Vec2
box->background_texture_uv1 = uv1; box->background_texture_uv1 = uv1;
} }
b32 UI_IsPointInBox(UI_Box *box, Vec2 point)
{
/* TODO: More efficient test. This logic is just copied from the renderer's SDF function for now. */
Vec2 p0 = box->p0;
Vec2 p1 = box->p1;
f32 inside_edge_dist = MinF32(MinF32(point.x - p0.x, p1.x - point.x), MinF32(point.y - p0.y, p1.y - point.y));
if (inside_edge_dist > 0)
{
f32 tl_radius = box->rounding_tl;
f32 tr_radius = box->rounding_tr;
f32 br_radius = box->rounding_br;
f32 bl_radius = box->rounding_bl;
Vec2 tl = VEC2(p0.x + tl_radius, p0.y + tl_radius);
Vec2 tr = VEC2(p1.x - tr_radius, p0.y + tr_radius);
Vec2 br = VEC2(p1.x - br_radius, p1.y - br_radius);
Vec2 bl = VEC2(p0.x + bl_radius, p1.y - bl_radius);
if (point.x < tl.x && point.y < tl.y) inside_edge_dist = MinF32(inside_edge_dist, tl_radius - Vec2Len(SubVec2(tl, point)));
if (point.x > tr.x && point.y < tr.y) inside_edge_dist = MinF32(inside_edge_dist, tr_radius - Vec2Len(SubVec2(tr, point)));
if (point.x > br.x && point.y > br.y) inside_edge_dist = MinF32(inside_edge_dist, br_radius - Vec2Len(SubVec2(br, point)));
if (point.x < bl.x && point.y > bl.y) inside_edge_dist = MinF32(inside_edge_dist, bl_radius - Vec2Len(SubVec2(bl, point)));
}
return inside_edge_dist >= 0;
}
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
//~ Event //~ Event
@ -561,24 +585,22 @@ void UI_BeginBuild(ControllerEventsArray controller_events, UI_BuildFlag build_f
case ControllerEventKind_CursorMove: case ControllerEventKind_CursorMove:
{ {
g->cursor_pos = MulXformV2(screen_to_ui_xf, Vec2FromFields(cev.cursor_pos)); g->cursor_pos = MulXformV2(screen_to_ui_xf, Vec2FromFields(cev.cursor_pos));
if (hovered_box)
{
hovered_box->event.flags &= ~UI_EventFlag_Hovered;
hovered_box = 0;
}
/* Iterate boxes in reverse render order */ /* Iterate boxes in reverse render order */
for (u64 pre_index = g->boxes_count; pre_index-- > 0;) for (u64 pre_index = g->boxes_count; pre_index-- > 0 && hovered_box == 0;)
{ {
UI_Box *box = g->boxes_pre[pre_index]; UI_Box *box = g->boxes_pre[pre_index];
if (box->key.hash != 0) if (box->key.hash != 0)
{ {
if (g->cursor_pos.x > box->p0.x && g->cursor_pos.x < box->p1.x && if (UI_IsPointInBox(box, g->cursor_pos))
g->cursor_pos.y > box->p0.y && g->cursor_pos.y < box->p1.y)
{ {
if (hovered_box)
{
hovered_box->event.flags &= ~UI_EventFlag_Hovered;
}
box->event.flags |= UI_EventFlag_Hovered; box->event.flags |= UI_EventFlag_Hovered;
hovered_box = box; hovered_box = box;
break;
} }
} }
} }

1
src/ui/ui_core.h
View File

@ -377,6 +377,7 @@ UI_Box *UI_BuildPad(UI_Box *parent, UI_Pad padding);
UI_Box *UI_BuildBox(String seed); UI_Box *UI_BuildBox(String seed);
void UI_SetBackgroundTexture(UI_Box *box, GPU_Resource *texture, Vec2 uv0, Vec2 uv1); void UI_SetBackgroundTexture(UI_Box *box, GPU_Resource *texture, Vec2 uv0, Vec2 uv1);
b32 UI_IsPointInBox(UI_Box *box, Vec2 point);
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
//~ Event //~ Event