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correct clipping and culling of elements

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This commit is contained in:
Alessandro Mauri 2023-01-13 14:53:19 +01:00
parent 47584032c7
commit b7e66977b1
2 changed files with 61 additions and 30 deletions

16
test/main.c
View File

@ -191,14 +191,14 @@ int main(void)
// ug_container_remove(ctx, "Menu fichissimo");
//}
ug_container_floating(ctx, "stupid name", (ug_div_t){.x=SIZE_PX(0), .y=SIZE_PX(0), .w=SIZE_PX(100), .h=SIZE_MM(75.0)});
//ug_container_floating(ctx, "stupid name", (ug_div_t){.x=SIZE_PX(0), .y=SIZE_PX(0), .w=SIZE_PX(100), .h=SIZE_MM(75.0)});
//ug_container_floating(ctx, "floating windoooooooow", (ug_div_t){.x=SIZE_PX(100), .y=SIZE_PX(0), .w=SIZE_PX(100), .h=SIZE_MM(75.0)});
ug_container_sidebar(ctx, "Right Sidebar", (ug_size_t)SIZE_PX(300), UG_SIDE_RIGHT);
ug_container_sidebar(ctx, "Left Sidebar", (ug_size_t)SIZE_PX(200), UG_SIDE_LEFT);
//ug_container_sidebar(ctx, "Right Sidebar", (ug_size_t)SIZE_PX(300), UG_SIDE_RIGHT);
//ug_container_sidebar(ctx, "Left Sidebar", (ug_size_t)SIZE_PX(200), UG_SIDE_LEFT);
//ug_container_sidebar(ctx, "Bottom Sidebar", (ug_size_t)SIZE_MM(10), UG_SIDE_BOTTOM);
//ug_container_sidebar(ctx, "Top Sidebar", (ug_size_t)SIZE_MM(40), UG_SIDE_TOP);
ug_container_sidebar(ctx, "Top Sidebar", (ug_size_t)SIZE_MM(40), UG_SIDE_TOP);
// ug_container_popup(ctx, "Annoying popup", (ug_div_t){.x=SIZE_MM(150), .y=SIZE_MM(150), .w=SIZE_PX(100), .h=SIZE_MM(75.0)});
@ -207,16 +207,14 @@ int main(void)
// printf("No space!\n");
ug_layout_row(ctx);
if (ug_element_button(ctx, "button", "btn", (ug_div_t){.w=SIZE_PX(20),.h=SIZE_PX(20)}))
printf("nope\n");
ug_element_button(ctx, "button 1", "", (ug_div_t){.w=SIZE_PX(10),.h=SIZE_PX(10)});
ug_element_button(ctx, "button 2", "", (ug_div_t){.w=SIZE_PX(10),.h=SIZE_PX(10)});
ug_element_button(ctx, "button 3", "", (ug_div_t){.w=SIZE_PX(10),.h=SIZE_PX(10)});
//ug_element_button(ctx, "button 3", "", (ug_div_t){.w=SIZE_PX(10),.h=SIZE_PX(10)});
ug_layout_column(ctx);
ug_element_button(ctx, "button 4", "", (ug_div_t){.w=SIZE_PX(10),.h=SIZE_PX(10)});
ug_element_button(ctx, "button 5", "", (ug_div_t){.w=SIZE_PX(10),.h=SIZE_PX(10)});
ug_element_button(ctx, "button 6", "", (ug_div_t){.w=SIZE_PX(10),.h=SIZE_PX(10),.x=SIZE_PX(-10)});
//ug_element_button(ctx, "button 6", "", (ug_div_t){.w=SIZE_PX(10),.h=SIZE_PX(10),.x=SIZE_PX(-10)});
ug_frame_end(ctx);

69
ugui.c
View File

@ -593,8 +593,8 @@ static int handle_container(ug_ctx_t *ctx, ug_container_t *cnt)
BETWEEN(mpos.x, minx, maxx) &&
BETWEEN(mpos.y, miny, maxy))) {
cnt->flags |= CNT_STATE_RESIZE_B;
rect->h += ctx->mouse.delta.y;
rca->h += ctx->mouse.delta.y;
rect->h = MAX(10, rect->h + ctx->mouse.delta.y);
rca->h = MAX(10, rca->h + ctx->mouse.delta.y);
}
}
@ -1022,6 +1022,9 @@ int ug_frame_end(ug_ctx_t *ctx)
ug_container_t *c = &ctx->cnt_stack.items[i];
// draw containers
draw_container(ctx, c, c->name);
// TODO: add a debug flag
// debug draw space used by elements
push_rect_command(ctx, &c->space, (ug_color_t)RGBA_FORMAT(0x0000abf0));
// draw elements
draw_elements(ctx, c);
// reset the layout to row
@ -1183,10 +1186,30 @@ static ug_element_t *get_element(ug_container_t *cnt, ug_id_t id)
}
// TODO: move these to the top and use theme everywhere needed
// update the element's position in the container area
#define R_MARGIN(r, b) (r.x + r.w - b)
#define L_MARGIN(r, b) (r.x + b)
#define T_MARGIN(r, b) (r.y + b)
#define B_MARGIN(r, b) (r.y + r.h - b)
// check if ra is outside of rb
#define OUTSIDE(ra, ba, rb, bb) (L_MARGIN(ra, ba) > R_MARGIN(rb, bb) || \
T_MARGIN(ra, ba) > B_MARGIN(rb, bb) || \
R_MARGIN(ra, ba) < L_MARGIN(rb, bb) || \
B_MARGIN(ra, ba) < T_MARGIN(rb, bb))
static int position_element(ug_ctx_t *ctx, ug_container_t *cnt, ug_element_t *elem)
{
// if there is no space then return
if (TEST(cnt->flags, CNT_LAYOUT_COLUMN)) {
if (cnt->space.h >= cnt->rca.h)
return -1;
} else {
if (cnt->space.w >= cnt->rca.w)
return -1;
}
ug_rect_t *rect, *rca;
rect = &(elem->rect);
rca = &(elem->rca);
@ -1202,6 +1225,8 @@ static int position_element(ug_ctx_t *ctx, ug_container_t *cnt, ug_element_t *el
// FIXME: different border thickness
int b = SZ_INT(s->border.size);
int m = SZ_INT(s->margin);
// TODO: element borders
int eb = 0;
int cx, cy, cw, ch;
// FIXME: this may not work
@ -1224,32 +1249,41 @@ static int position_element(ug_ctx_t *ctx, ug_container_t *cnt, ug_element_t *el
rca->x = cx + rect->x;
rca->y = cy + rect->y;
// if there is no space for the element
if (cnt->space.w + rca->w > cnt->rca.w || cnt->space.h + rca->h > cnt->rca.h)
return -1;
// or the element was put outside of the container
if (rca->x >= cnt->rca.x + cnt->rca.w || rca->y >= cnt->rca.y + cnt->rca.h)
// if the element was put outside of the container return, this can happen
// because of the element offset
// FIXME: can we do this check before?
if (OUTSIDE((*rca), eb, cnt->rca, b))
return -1;
// FIXME: crop element if it is partially outside, this shit introduces
// all sorts of resizing bugs
if (rca->x < cnt->rca.x + cnt->rca.w && rca->x + rca->w > cnt->rca.x + cnt->rca.w)
rca->w = rca->x + rca->w - (cnt->rca.x + cnt->rca.w);
if (R_MARGIN((*rca), eb) > R_MARGIN(cnt->rca, b))
rca->w = R_MARGIN(cnt->rca, b) - L_MARGIN((*rca), eb);
if (L_MARGIN((*rca), eb) < L_MARGIN(cnt->rca, b)) {
rca->x = L_MARGIN(cnt->rca, b);
rca->w -= L_MARGIN(cnt->rca, b) - L_MARGIN((*rca), eb);
}
if (T_MARGIN((*rca), eb) < T_MARGIN(cnt->rca, b)) {
rca->y = T_MARGIN(cnt->rca, b);
rca->h -= T_MARGIN(cnt->rca, b) - T_MARGIN((*rca), eb);
}
if (B_MARGIN((*rca), eb) > B_MARGIN(cnt->rca, b))
rca->h = B_MARGIN(cnt->rca, b) - T_MARGIN((*rca), eb);
if (TEST(cnt->flags, CNT_LAYOUT_COLUMN)) {
cnt->c_orig.y += rca->h + m;
cnt->r_orig.y += rca->h + m;
cnt->space.h += rca->h;
if ((cnt->space.x + cnt->space.w) < (rca->x + rca->w))
cnt->space.w += cnt->space.x + cnt->space.w - rca->x - rca->w;
} else {
cnt->r_orig.x += rca->w + m;
cnt->c_orig.x += rca->w + m;
cnt->space.w += rca->w;
if ((cnt->space.y + cnt->space.h) < (rca->y + rca->h))
cnt->space.h += cnt->space.y + cnt->space.h - rca->y - rca->h;
}
if (B_MARGIN(cnt->space, 0) < B_MARGIN((*rca), eb))
cnt->space.h = B_MARGIN((*rca), eb) - T_MARGIN(cnt->space, 0);
if (R_MARGIN(cnt->space, 0) < R_MARGIN((*rca), eb))
cnt->space.w = R_MARGIN((*rca), eb) - L_MARGIN(cnt->space, 0);
return 0;
}
@ -1276,7 +1310,6 @@ int ug_element_button(ug_ctx_t *ctx, const char *name, const char *txt, ug_div_t
ug_container_t *cp;
GET_SELECTED_CONTAINER(ctx, cp);
printf("selected: %x\n", ctx->selected_cnt);
ug_id_t id = hash(name, strlen(name));
ug_element_t *elem = get_element(cp, id);