From d456617f0eb93df0ec8eb81ff6e04ca988c09c60 Mon Sep 17 00:00:00 2001
From: "anselm@garbe.us" <unknown>
Date: Sun, 18 Nov 2012 12:04:29 +0100
Subject: [PATCH] basic draw.c structure

---
 Makefile |   2 +-
 draw.c   | 139 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 draw.h   |  14 ++++--
 3 files changed, 149 insertions(+), 6 deletions(-)
 create mode 100644 draw.c

diff --git a/Makefile b/Makefile
index b139b54..ce6e508 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@
 
 include config.mk
 
-SRC = dwm.c
+SRC = draw.c dwm.c
 OBJ = ${SRC:.c=.o}
 
 all: options dwm
diff --git a/draw.c b/draw.c
new file mode 100644
index 0000000..04e7f0d
--- /dev/null
+++ b/draw.c
@@ -0,0 +1,139 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdlib.h>
+#include <X11/Xlib.h>
+
+#include "draw.h"
+
+Draw *
+draw_create(Display *dpy, Window win, unsigned int w, unsigned int h) {
+	Draw *draw = (Draw *)calloc(1, sizeof(Draw));
+	draw->w = w;
+	draw->h = h;
+	/* TODO: drawable creation */
+	/* TODO: gc allocation */
+	return draw;
+}
+
+void
+draw_resize(Draw *draw, unsigned int w, unsigned int h) {
+	if(!draw)
+		return;
+	draw->w = w;
+	draw->h = h;
+	/* TODO: resize drawable */
+}
+
+void
+draw_free(Draw *draw) {
+	/* TODO: deallocate DDCs */
+	/* TODO: deallocate drawable */
+	free(draw);
+}
+
+DDC *
+dc_create(Draw *draw) {
+	DDC *dc = (DDC *)calloc(1, sizeof(DDC));
+	dc->draw = draw;
+	dc->next = draw->dc;
+	draw->dc = dc;
+	return dc;
+}
+
+void
+dc_free(DDC *dc) {
+	DDC **tdc;
+
+	if(!dc)
+		return;
+	/* remove from dc list */
+	for(tdc = &dc->draw->dc; *tdc && *tdc != dc; tdc = &(*tdc)->next);
+	*tdc = dc->next;
+	/* TODO: deallocate any resources of this dc, if needed */
+	free(dc);
+}
+
+Fnt *
+font_create(const char *fontname) {
+	Fnt *font = (Fnt *)calloc(1, sizeof(Fnt));
+	/* TODO: allocate actual font */
+	return font;
+}
+
+void
+font_free(Fnt *font) {
+	if(!font)
+		return;
+	/* TODO: deallocate any font resources */
+	free(font);
+}
+
+Col *
+col_create(const char *colname) {
+	Col *col = (Col *)calloc(1, sizeof(Col));
+	/* TODO: allocate color */
+	return col;
+}
+
+void
+col_free(Col *col) {
+	if(!col)
+		return;
+	/* TODO: deallocate any color resource */
+	free(col);
+}
+
+void
+dc_setfont(DDC *dc, Fnt *font) {
+	if(!dc || !font)
+		return;
+	dc->font = font;
+}
+
+void
+dc_setfg(DDC *dc, Col *col) {
+	if(!dc || !col) 
+		return;
+	dc->fg = col;
+}
+
+void
+dc_setbg(DDC *dc, Col *col) {
+	if(!dc || !col)
+		return;
+	dc->bg = col;
+}
+
+void
+dc_setfill(DDC *dc, Bool fill) {
+	if(!dc)
+		return;
+	dc->fill = fill;
+}
+
+void
+dc_drawrect(DDC *dc, int x, int y, unsigned int w, unsigned int h) {
+	if(!dc)
+		return;
+	/* TODO: draw the rectangle */
+}
+
+void
+dc_drawtext(DDC *dc, int x, int y, const char *text) {
+	if(!dc)
+		return;
+	/* TODO: draw the text */
+}
+
+void
+dc_map(DDC *dc, int x, int y, unsigned int w, unsigned int h) {
+	if(!dc)
+		return;
+	/* TODO: map the dc contents in the region */
+}
+
+void
+dc_getextents(DDC *dc, const char *text, TextExtents *extents) {
+	if(!dc || !extents)
+		return;
+	/* TODO: get extents */
+}
diff --git a/draw.h b/draw.h
index 955067d..9aec43d 100644
--- a/draw.h
+++ b/draw.h
@@ -1,13 +1,16 @@
 /* See LICENSE file for copyright and license details. */
 
+typedef struct _DDC DDC;
+
 /* X11 types - begin */
+typedef struct _XDraw Draw;
 struct _XDraw {
 	unsigned int w, h;
 	Display *dpy;
 	Drawable drawable;
 	GC gc;
+	DDC *dc;
 };
-typedef struct _XDraw Draw;
 
 struct _XCol {
 	unsigned long rgb;
@@ -24,13 +27,14 @@ struct _XFont {
 typedef struct _XFont Fnt;
 /* X11 types - end */
 
-typedef struct {
+struct _DDC {
 	Draw *draw;
 	Col *fg;
 	Col *bg;
 	Fnt *font;
 	Bool fill;
-} DDC;
+	DDC *next;
+};
 
 typedef struct {
 	unsigned int w;
@@ -60,8 +64,8 @@ void col_free(Col *col);
 
 /* Drawing context manipulation */
 void dc_setfont(DDC *dc, Fnt *font);
-void dc_setfg(DDC *dc, Col col);
-void dc_setbg(DDC *dc, Col col);
+void dc_setfg(DDC *dc, Col *col);
+void dc_setbg(DDC *dc, Col *col);
 void dc_setfill(DDC *dc, Bool fill);
 
 /* Drawing functions */