From: terencehill <piuntn@gmail.com>
Date: Sun, 7 Apr 2024 14:50:06 +0000 (+0200)
Subject: drawstring_aspect: fix wrong horizontal string alignment sometimes due to r_font_size... 
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=d29d074f0b3e212ad3e0728f7f973b179668cde4;p=xonotic%2Fxonotic-data.pk3dir.git

drawstring_aspect: fix wrong horizontal string alignment sometimes due to r_font_size_snapping 4; document macro helper. Also don't display timer subtext bold to mitigate drawstring_aspect bug

While at it I wrapped a couple very long lines in timer panel code
---

diff --git a/qcsrc/client/draw.qc b/qcsrc/client/draw.qc
index f08fbf5d9..5540ae4fb 100644
--- a/qcsrc/client/draw.qc
+++ b/qcsrc/client/draw.qc
@@ -81,12 +81,15 @@ float stringwidth(string text, float handleColors, vector sz)
 	return r;
 }
 
-#define SET_POS_AND_SZ_Y_ASPECT(allow_colors) MACRO_BEGIN \
+// it scales text up to box width
+// NOTE it doesn't work perfectly because r_font_size_snapping 4 (default value)
+// may render text with a slightly different size making text bigger or smaller
+// NOTE this is implemented as a macro to reduce number of function calls per frame
+#define DRAWSTRING_ASPECT_SCALE(pos, text, sz, allow_colors) MACRO_BEGIN \
 	float textaspect, oldsz; \
 	vector dfs = drawfontscale; \
 	drawfontscale = '1 1 0'; \
 	textaspect = stringwidth(text, allow_colors, '1 1 1' * sz.y) / sz.y; \
-	drawfontscale = dfs; \
 	if(sz.x/sz.y > textaspect) { \
 		oldsz = sz.x; \
 		sz.x = sz.y * textaspect; \
@@ -95,18 +98,23 @@ float stringwidth(string text, float handleColors, vector sz)
 		oldsz = sz.y; \
 		sz.y = sz.x / textaspect; \
 		pos.y += (oldsz - sz.y) * 0.5; \
+		/* in case text is rendered with a different size, at least recenter it horizontally */ \
+		/* unfortunately there is no way to correctly recenter it vertically */ \
+		float new_textwidth = stringwidth(text, allow_colors, '1 1 1' * sz.y); \
+		pos.x += (sz.x - new_textwidth) * 0.5; \
 	} \
+	drawfontscale = dfs; \
 MACRO_END
 
 // drawstring wrapper to draw a string as large as possible with preserved aspect ratio into a box
 void drawstring_aspect(vector pos, string text, vector sz, vector color, float theAlpha, float drawflag) {
-	SET_POS_AND_SZ_Y_ASPECT(false);
+	DRAWSTRING_ASPECT_SCALE(pos, text, sz, false);
 	drawstring(pos, text, '1 1 0' * sz.y, color, theAlpha, drawflag);
 }
 
 // drawstring wrapper to draw a colorcodedstring as large as possible with preserved aspect ratio into a box
 void drawcolorcodedstring_aspect(vector pos, string text, vector sz, float theAlpha, float drawflag) {
-	SET_POS_AND_SZ_Y_ASPECT(true);
+	DRAWSTRING_ASPECT_SCALE(pos, text, sz, true);
 	drawcolorcodedstring(pos, text, '1 1 0' * sz.y, theAlpha, drawflag);
 }
 
@@ -129,7 +137,7 @@ void drawstring_expanding(vector position, string text, vector theScale, vector
 
 // drawstring wrapper to draw a string as large as possible with preserved aspect ratio into a box
 void drawstring_aspect_expanding(vector pos, string text, vector sz, vector color, float theAlpha, float drawflag, float fadelerp) {
-	SET_POS_AND_SZ_Y_ASPECT(false);
+	DRAWSTRING_ASPECT_SCALE(pos, text, sz, false);
 	drawstring_expanding(pos, text, '1 1 0' * sz.y, color, theAlpha, drawflag, fadelerp);
 }
 
@@ -145,7 +153,7 @@ void drawcolorcodedstring_expanding(vector position, string text, vector theScal
 }
 
 void drawcolorcodedstring_aspect_expanding(vector pos, string text, vector sz, float theAlpha, float drawflag, float fadelerp) {
-	SET_POS_AND_SZ_Y_ASPECT(true);
+	DRAWSTRING_ASPECT_SCALE(pos, text, sz, true);
 	drawcolorcodedstring_expanding(pos, text, '1 1 0' * sz.y, theAlpha, drawflag, fadelerp);
 }
 
diff --git a/qcsrc/client/hud/panel/timer.qc b/qcsrc/client/hud/panel/timer.qc
index 269d12b5e..9b10f63e3 100644
--- a/qcsrc/client/hud/panel/timer.qc
+++ b/qcsrc/client/hud/panel/timer.qc
@@ -153,13 +153,17 @@ void HUD_Timer()
 	if(subtimer_str) {
 		float subtimer_padding = subtimer_size.y / 5;
 		timer_size.x -= subtimer_size.x;
-		drawstring_aspect(pos + eX * timer_size.x + eY * subtimer_padding, (swap ? timer_str : subtimer_str), subtimer_size - eY * subtimer_padding * 2, (swap ? timer_color : subtimer_color), panel_fg_alpha, DRAWFLAG_NORMAL);
+		drawstring_aspect(pos + eX * timer_size.x + eY * subtimer_padding,
+			(swap ? timer_str : subtimer_str), subtimer_size - eY * 2 * subtimer_padding,
+			(swap ? timer_color : subtimer_color), panel_fg_alpha, DRAWFLAG_NORMAL);
 	}
 
-	drawstring_aspect(pos, (swap ? subtimer_str : timer_str), timer_size, (swap ? subtimer_color : timer_color), panel_fg_alpha, DRAWFLAG_NORMAL);
+	drawstring_aspect(pos,
+		(swap ? subtimer_str : timer_str), timer_size,
+		(swap ? subtimer_color : timer_color), panel_fg_alpha, DRAWFLAG_NORMAL);
+
+	draw_endBoldFont();
 
 	if(subtext)
 		drawstring_aspect(pos + eY * timer_size.y, subtext, subtext_size, '0 1 0', panel_fg_alpha, DRAWFLAG_NORMAL);
-
-	draw_endBoldFont();
 }