Draw padding

We need to draw the padding-space around the main cells if our size is not
a multiple of the cell size. We retrieve the default bg color via a new
libtsm helper.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>

3 files changed, 21 insertions, 0 deletions

diff --git a/src/wlt_render.c b/src/wlt_render.c
index f89885d..33b99f6 100644
--- a/src/wlt_render.c
+++ b/src/wlt_render.c
@@ -354,6 +354,8 @@ static int wlt_renderer_draw_cell(struct tsm_screen *screen, uint32_t id,
 void wlt_renderer_draw(const struct wlt_draw_ctx *ctx)
 {
 	struct wlt_renderer *rend = ctx->rend;
+	struct tsm_screen_attr attr;
+	unsigned int w, h;
 
 	/* cairo is *way* too slow to render all masks efficiently. Therefore,
 	 * we render all glyphs into a shadow buffer on the CPU and then tell
@@ -367,4 +369,21 @@ void wlt_renderer_draw(const struct wlt_draw_ctx *ctx)
 
 	cairo_set_source_surface(ctx->cr, rend->surface, 0, 0);
 	cairo_paint(ctx->cr);
+
+	/* draw padding */
+	w = tsm_screen_get_width(ctx->screen);
+	h = tsm_screen_get_height(ctx->screen);
+	tsm_vte_get_def_attr(ctx->vte, &attr);
+	cairo_set_source_rgb(ctx->cr,
+			     attr.br / 255.0,
+			     attr.bg / 255.0,
+			     attr.bb / 255.0);
+	cairo_move_to(ctx->cr, w * ctx->cell_width, 0);
+	cairo_line_to(ctx->cr, w * ctx->cell_width, h * ctx->cell_height);
+	cairo_line_to(ctx->cr, 0, h * ctx->cell_height);
+	cairo_line_to(ctx->cr, 0, rend->height);
+	cairo_line_to(ctx->cr, rend->width, rend->height);
+	cairo_line_to(ctx->cr, rend->width, 0);
+	cairo_close_path(ctx->cr);
+	cairo_fill(ctx->cr);
 }
diff --git a/src/wlterm.c b/src/wlterm.c
index a50ad8c..2301c37 100644
--- a/src/wlterm.c
+++ b/src/wlterm.c
@@ -334,6 +334,7 @@ static gboolean term_redraw_cb(GtkWidget *widget, cairo_t *cr, gpointer data)
 	ctx.cell_width = term->cell_width;
 	ctx.cell_height = term->cell_height;
 	ctx.screen = term->screen;
+	ctx.vte = term->vte;
 	cairo_clip_extents(cr, &ctx.x1, &ctx.y1, &ctx.x2, &ctx.y2);
 
 	wlt_renderer_draw(&ctx);
diff --git a/src/wlterm.h b/src/wlterm.h
index 0c9efd0..d3c2c8d 100644
--- a/src/wlterm.h
+++ b/src/wlterm.h
@@ -89,6 +89,7 @@ struct wlt_draw_ctx {
 	unsigned int cell_width;
 	unsigned int cell_height;
 	struct tsm_screen *screen;
+	struct tsm_vte *vte;
 
 	double x1;
 	double y1;