From 3a5ec4a0d1a37ca9627cfc608f601f99e8fc223e Mon Sep 17 00:00:00 2001
From: Sara <saragerretsen@proton.me>
Date: Wed, 26 Apr 2023 00:34:11 +0200
Subject: [PATCH] finished basic text rendering

---
 src/corelib/render.c | 53 ++++++++++++++++++++++++++++++++++++++------
 src/corelib/render.h |  7 +++---
 2 files changed, 50 insertions(+), 10 deletions(-)

diff --git a/src/corelib/render.c b/src/corelib/render.c
index bf56b37..543e7d1 100644
--- a/src/corelib/render.c
+++ b/src/corelib/render.c
@@ -233,7 +233,7 @@ void exec_text_cmd(const drawcmd_t* cmd) {
 	SDL_FRect r = cmd->text.area;
 	int fh = TTF_FontHeight(cmd->text.style.font);
 	int wrap = (int)(fh * r.w / cmd->text.style.size);
-	SDL_Surface* s = TTF_RenderText_Solid_Wrapped(cmd->text.style.font, cmd->text.text, cmd->text.fg, wrap);
+	SDL_Surface* s = TTF_RenderText_Solid_Wrapped(cmd->text.style.font, cmd->text.text, cmd->text.style.color, wrap);
 	if(s != NULL) {
 		SDL_Rect srcr = {0,0,s->w, s->h};
 		SDL_Texture* t = SDL_CreateTextureFromSurface(g_context.renderer, s);
@@ -241,8 +241,8 @@ void exec_text_cmd(const drawcmd_t* cmd) {
 
 		float asp_dst = r.w / r.h;
 		float asp_src = (float)srcr.w / (float)srcr.h;
-		if(asp_src < asp_dst) {
-			srcr.h = srcr.w * asp_dst;
+		if((float)s->h / fh * cmd->text.style.size > r.h) {
+			srcr.h = srcr.w / asp_dst;
 		}
 
 		r.w = (float)srcr.w / fh * cmd->text.style.size;
@@ -255,6 +255,45 @@ void exec_text_cmd(const drawcmd_t* cmd) {
 	free(cmd->text.text);
 }
 
+sprite_t render_text(const char* str, SDL_FRect area, text_style_t style) {
+	SDL_FRect r = area;
+	int fh = TTF_FontHeight(style.font);
+	int wrap = (int)(fh * r.w / style.size);
+	SDL_Surface* s = TTF_RenderText_Solid_Wrapped(style.font, str, style.color, wrap);
+	if(s != NULL) {
+		SDL_Rect srcr = {0,0,s->w, s->h};
+		SDL_Texture* t = SDL_CreateTextureFromSurface(g_context.renderer, s);
+		SDL_FreeSurface(s);
+
+		float asp_dst = r.w / r.h;
+		float asp_src = (float)srcr.w / (float)srcr.h;
+		if((float)s->h / fh * style.size > r.h) {
+			srcr.h = srcr.w / asp_dst;
+		}
+
+		r.w = (float)srcr.w / fh * style.size;
+		r.h = (float)srcr.h / fh * style.size;
+
+		return (sprite_t) {
+			.depth=RLAYER_SPRITES,
+			.origin={0,0},
+			.rot=0,
+			.sx=area.w, .sy=area.h,
+			.x=area.x, .y=area.y,
+			.texture=t,
+			.uv=srcr,
+		};
+	}
+	return (sprite_t) {
+		.depth=0,
+		.origin={0,0}, .rot=0,
+		.sx=0, .sy=0,
+		.texture=NULL,
+		.uv={0,0,0,0},
+		.x=0,.y=0
+	};
+}
+
 typedef void(*drawcmd_delegate)(const drawcmd_t*);
 drawcmd_delegate const drawcmd_funcs[] = {
 	&exec_sprite_cmd,
@@ -358,12 +397,11 @@ void draw_sliced(const nineslice_t *sliced) {
 	draw(&d);
 }
 
-void draw_text(const char *str, SDL_FRect area, text_style_t style, SDL_Color font_color, depth_t depth) {
+void draw_text(const char *str, SDL_FRect area, text_style_t style, depth_t depth) {
 	int len = strlen(str);
 	textarea_t t = {
 		.text = calloc(len+1, sizeof(char)),
 		.area = area,
-		.fg = font_color,
 		.style = style,
 	};
 	strcpy(t.text, str);
@@ -425,11 +463,12 @@ sprite_t sprite_from_spritesheet(spritesheet_t *sheet, int index) {
 	};
 }
 
-text_style_t make_text_style(const char *font, int dpi, float size) {
+text_style_t make_text_style(const char *font, SDL_Color color, int dpi, float size) {
 	TTF_Font* fnt = get_font(font, dpi);
 	return (text_style_t){
 		.font = fnt,
-		.size = size
+		.size = size,
+		.color = color
 	};
 }
 
diff --git a/src/corelib/render.h b/src/corelib/render.h
index eacb08d..62ce38f 100644
--- a/src/corelib/render.h
+++ b/src/corelib/render.h
@@ -24,6 +24,7 @@ typedef enum drawcmdtype_t {
 typedef struct text_style_t {
 	TTF_Font* font;
 	float size;
+	SDL_Color color;
 } text_style_t;
 
 typedef struct spritesheet_t {
@@ -43,7 +44,6 @@ typedef struct nineslice_t {
 typedef struct textarea_t {
 	char* text;
 	text_style_t style;
-	SDL_Color fg;
 	SDL_FRect area;
 } textarea_t;
 
@@ -91,15 +91,16 @@ extern void clear_buffer();
 extern void swap_buffer();
 extern void draw(const drawcmd_t* cmd);
 
+extern sprite_t render_text(const char* str, SDL_FRect area, text_style_t style);
 extern void draw_sprite(const sprite_t* sprite);
 extern void draw_rect(const rectshape_t* rect);
 extern void draw_sliced(const nineslice_t* sliced);
-extern void draw_text(const char* str, SDL_FRect area, text_style_t style, SDL_Color font_color, depth_t depth);
+extern void draw_text(const char* str, SDL_FRect area, text_style_t style, depth_t depth);
 extern spritesheet_t make_spritesheet(const char* file, int tile_width, int tile_height);
 extern nineslice_t make_nineslice(const char* file, int corner_px, float radius);
 extern sprite_t make_sprite(const char* file, float x, float y);
 extern sprite_t sprite_from_spritesheet(spritesheet_t* sheet, int index);
-extern text_style_t make_text_style(const char* font, int dpi, float size);
+extern text_style_t make_text_style(const char* font, SDL_Color color, int dpi, float size);
 extern SDL_Rect get_srcrect_from(spritesheet_t* sheet, int index);
 extern void set_active_view(const view_t* view);