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wayland: have backbuffer be larger then framebuffer instead of other way around

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This commit is contained in:
IoIxD 2026-03-23 15:32:28 -07:00
commit 24ae1c4e11
1 changed files with 34 additions and 29 deletions
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63
src/backend/wayland.c
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@ -1001,8 +1001,8 @@ static void xdg_toplevel_configure(void* data,
region_setup(self);
if(self->wayland.type == MWLL_WAYLAND_TOPLEVEL && !self->wayland.has_decorations) {
MwU32 vwidth = self->wayland.ww - (CSD_BORDER_FRAME_LEFT + CSD_BORDER_FRAME_RIGHT);
MwU32 vheight = self->wayland.wh - (CSD_BORDER_FRAME_TOP + CSD_BORDER_FRAME_BOTTOM);
MwU32 vwidth = self->wayland.ww;
MwU32 vheight = self->wayland.wh;
if(vwidth < 0) vwidth = 0;
if(vheight < 0) vheight = 0;
wp_viewport_set_destination(self->wayland.vp, vwidth, vheight);
@ -1123,9 +1123,15 @@ static void backbuffer_setup(struct _MwLLWayland* wayland) {
if(wayland->type != MWLL_WAYLAND_TOPLEVEL) {
return;
}
buffer_setup(&wayland->backbuffer, wayland->ww, wayland->wh);
MwU32 w = wayland->ww;
MwU32 h = wayland->wh;
if(!wayland->has_decorations) {
w += (CSD_BORDER_FRAME_LEFT + CSD_BORDER_FRAME_RIGHT);
h += (CSD_BORDER_FRAME_TOP + CSD_BORDER_FRAME_BOTTOM);
}
buffer_setup(&wayland->backbuffer, w, h);
wayland->back_cs = cairo_image_surface_create_for_data(wayland->backbuffer.buf, CAIRO_FORMAT_ARGB32, wayland->ww, wayland->wh, 4 * wayland->ww);
wayland->back_cs = cairo_image_surface_create_for_data(wayland->backbuffer.buf, CAIRO_FORMAT_ARGB32, w, h, 4 * w);
wayland->back_cairo = cairo_create(wayland->back_cs);
memset(wayland->backbuffer.buf, 0, wayland->backbuffer.buf_size);
@ -1301,13 +1307,17 @@ static void setup_toplevel(MwLL r, int x, int y) {
dec->decoration, ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE);
} else {
/* otherwise set up viewporter */
struct wp_viewporter* wp = WAYLAND_GET_INTERFACE(r->wayland, wp_viewporter)->context;
r->wayland.vp = wp_viewporter_get_viewport(wp, r->wayland.framebuffer.surface);
MwU32 vwidth = r->wayland.ww - (CSD_BORDER_FRAME_LEFT + CSD_BORDER_FRAME_RIGHT);
MwU32 vheight = r->wayland.wh - (CSD_BORDER_FRAME_TOP + CSD_BORDER_FRAME_BOTTOM);
struct wp_viewporter* wp = WAYLAND_GET_INTERFACE(r->wayland, wp_viewporter)->context;
MwI32 x = r->wayland.x;
MwI32 y = r->wayland.y;
MwU32 vwidth = r->wayland.ww;
MwU32 vheight = r->wayland.wh;
r->wayland.vp = wp_viewporter_get_viewport(wp, r->wayland.framebuffer.surface);
if(x < 0) x = 0;
if(y < 0) y = 0;
if(vwidth < 0) vwidth = 0;
if(vheight < 0) vheight = 0;
wp_viewport_set_source(r->wayland.vp, r->wayland.x, r->wayland.y, r->wayland.ww, r->wayland.wh);
wp_viewport_set_source(r->wayland.vp, wl_fixed_from_int(x), wl_fixed_from_int(y), wl_fixed_from_int(r->wayland.ww), wl_fixed_from_int(r->wayland.wh));
wp_viewport_set_destination(r->wayland.vp, vwidth, vheight);
wl_subsurface_set_position(r->wayland.toplevel->ssurface, CSD_BORDER_FRAME_LEFT, CSD_BORDER_FRAME_TOP);
@ -1678,14 +1688,7 @@ static void MwLLSetWHImpl(MwLL handle, int w, int h) {
handle->wayland.wh = 10;
goto refresh;
}
if(handle->wayland.parent) {
if(handle->wayland.parent->wayland.type == MWLL_WAYLAND_TOPLEVEL && !handle->wayland.parent->wayland.has_decorations) {
if(w >= handle->wayland.parent->wayland.ww - (CSD_BORDER_FRAME_LEFT + CSD_BORDER_FRAME_RIGHT))
w = handle->wayland.parent->wayland.ww - (CSD_BORDER_FRAME_LEFT + CSD_BORDER_FRAME_RIGHT);
if(h >= handle->wayland.parent->wayland.wh - (CSD_BORDER_FRAME_TOP + CSD_BORDER_FRAME_BOTTOM))
h = handle->wayland.parent->wayland.wh - (CSD_BORDER_FRAME_TOP + CSD_BORDER_FRAME_BOTTOM);
}
}
handle->wayland.ww = w;
handle->wayland.wh = h;
@ -1719,34 +1722,36 @@ static void MwLLBeginDrawImpl(MwLL handle) {
return;
}
if(!handle->wayland.has_decorations) {
int x, y;
int x, y;
MwU32 w = handle->wayland.ww + CSD_BORDER_FRAME_LEFT + CSD_BORDER_FRAME_RIGHT;
MwU32 h = handle->wayland.wh + CSD_BORDER_FRAME_TOP + CSD_BORDER_FRAME_BOTTOM;
cairo_set_line_width(handle->wayland.back_cairo, 4.0);
for(x = 0; x < handle->wayland.ww; x++) {
float placeholder = (float)x / (float)handle->wayland.ww;
for(x = 0; x < w; x++) {
float placeholder = (float)x / (float)w;
cairo_set_source_rgb(handle->wayland.back_cairo, placeholder, 0.25, 0.25);
cairo_move_to(handle->wayland.back_cairo, handle->wayland.ww - x, 0);
cairo_line_to(handle->wayland.back_cairo, handle->wayland.ww - x, CSD_BORDER_FRAME_TOP);
cairo_move_to(handle->wayland.back_cairo, w - x, 0);
cairo_line_to(handle->wayland.back_cairo, w - x, CSD_BORDER_FRAME_TOP);
cairo_stroke(handle->wayland.back_cairo);
cairo_move_to(handle->wayland.back_cairo, x, CSD_BORDER_FRAME_TOP);
cairo_line_to(handle->wayland.back_cairo, x, handle->wayland.wh);
cairo_line_to(handle->wayland.back_cairo, x, h);
cairo_stroke(handle->wayland.back_cairo);
}
cairo_set_source_rgba(handle->wayland.back_cairo, 1, 1, 1, 0.5);
cairo_move_to(handle->wayland.back_cairo, 0, 0);
cairo_line_to(handle->wayland.back_cairo, 0, handle->wayland.wh);
cairo_line_to(handle->wayland.back_cairo, 0, h);
cairo_stroke(handle->wayland.back_cairo);
cairo_move_to(handle->wayland.back_cairo, 0, 0);
cairo_line_to(handle->wayland.back_cairo, handle->wayland.ww, 0);
cairo_line_to(handle->wayland.back_cairo, w, 0);
cairo_stroke(handle->wayland.back_cairo);
cairo_set_source_rgba(handle->wayland.back_cairo, 0, 0, 0, 0.5);
cairo_move_to(handle->wayland.back_cairo, 0, handle->wayland.wh);
cairo_line_to(handle->wayland.back_cairo, handle->wayland.ww, handle->wayland.wh);
cairo_move_to(handle->wayland.back_cairo, 0, h);
cairo_line_to(handle->wayland.back_cairo, w, h);
cairo_stroke(handle->wayland.back_cairo);
cairo_move_to(handle->wayland.back_cairo, handle->wayland.ww, 0);
cairo_line_to(handle->wayland.back_cairo, handle->wayland.ww, handle->wayland.wh);
cairo_move_to(handle->wayland.back_cairo, w, 0);
cairo_line_to(handle->wayland.back_cairo, w, h);
cairo_stroke(handle->wayland.back_cairo);
if(strlen(handle->wayland.title) != 0) {