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FIX: Track label cut out when overflown #100

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FIX: Track label cut out when overflown #100

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33 changes: 30 additions & 3 deletions src/plug.c
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Original file line number Diff line number Diff line change
Expand Up @@ -771,6 +771,10 @@ static void tracks_panel_with_location(const char *file, int line, Rectangle pan

Vector2 mouse = GetMousePosition();

static float dt = 0;
static uint64_t hovered_label_id = 0;
static int char_shift = 0;

float scroll_bar_width = panel_boundary.width*0.03;
float item_size = panel_boundary.width*0.2;
float visible_area_size = panel_boundary.height;
Expand Down Expand Up @@ -841,9 +845,32 @@ static void tracks_panel_with_location(const char *file, int line, Rectangle pan
.y = item_boundary.y + item_boundary.height*0.5 - size.y*0.5,
};
// TODO: use SDF fonts
// TODO: we need a better indication that the label was cut out because of the overflow
// I was think about some sort of gradient. Ideally, we need to scroll the label on hover.
track_label(p->font, text, position, fontSize, WHITE, item_boundary.width - text_padding*2);
// Label overflow scroll handler
float max_width = item_boundary.width - text_padding*2;
uint64_t item_id = djb2(id, &i, sizeof(i));
int state = button_with_id(item_id, GetCollisionRec(panel_boundary, item_boundary));

if (state & BS_HOVEROVER) { // <-- Current item is being hovered on
dt += GetFrameTime();
if (item_id != hovered_label_id) { // <-- But it is not same as the last hovered item, so reset the shift
char_shift = 0;
hovered_label_id = item_id;
} else { // <-- it is same as the last hovered item, so count the shift
if (dt > 0.5f) {
dt = 0;
size = MeasureTextEx(p->font, text + char_shift, fontSize, 0);
if (size.x < max_width - 10) { // <-- End of scroll, reset shift
char_shift = 0;
} else {
char_shift += 1;
}
}
}
track_label(p->font, text + char_shift, position, fontSize, WHITE, max_width);

} else { // <-- No hovering, so draw label with no shift applied
track_label(p->font, text, position, fontSize, WHITE, max_width);
}
}

// TODO: up and down clickable buttons on the scrollbar
Expand Down
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