Start working on it

1 files changed, 123 insertions, 0 deletions

diff --git a/graphics.c b/graphics.c
new file mode 100644
index 0000000..7339d8f
--- /dev/null
+++ b/graphics.c
@@ -0,0 +1,123 @@
+#include <u.h>
+#include <libc.h>
+#include <thread.h>
+#include <draw.h>
+#include <mouse.h>
+#include <keyboard.h>
+
+#include "guifs.h"
+
+Mousectl *mouse;
+Keyboardctl *keyboard;
+Channel *updatechan;
+
+void
+drawgui(GuiElement *g)
+{
+	GuiSpec spec = guispecs[g->type];
+	spec.draw(g);
+	for(int i = 0; i < g->nchildren; i++)
+		drawgui(g->children[i]);
+}
+
+void
+drawnone(GuiElement *g)
+{
+	Image *bg = getprop(g, Pbackground).colour->image;
+	draw(screen, g->rect, bg, nil, ZP);
+}
+
+void
+drawcontainer(GuiElement *g)
+{
+	Image *bg = getprop(g, Pbackground).colour->image;
+	draw(screen, g->rect, bg, nil, ZP);
+}
+
+Colour *
+mkcolour(ulong c)
+{
+	lockdisplay(display);
+	Colour *col = emalloc(sizeof(Colour));
+	col->image = allocimage(display, Rect(0,0,1,1), screen->chan, 1, c);
+	col->code = c;
+	unlockdisplay(display);
+
+	return col;
+}
+
+void
+updategui(int new)
+{
+	/* Trigger a call to resized by sending a message */
+	send(updatechan, &new);
+}
+
+void
+resized(int new)
+{
+	if(new && getwindow(display, Refnone) < 0)
+		sysfatal("can't reattach to window: %r");
+
+	if(root != nil){
+		layout(root, screen->r);
+		drawgui(root);
+		flushimage(display, 1);
+	}
+}
+
+void
+guiproc(void *)
+{
+	int i;
+	if(initdraw(nil, nil, "guifs") < 0)
+		sysfatal("initdraw failed");
+	display->locking = 1;
+
+	if((mouse = initmouse(nil, screen)) == nil)
+		sysfatal("initmouse failed");
+	if((keyboard = initkeyboard(nil)) == nil)
+		sysfatal("initkeyboard failed");
+
+	enum {
+		Aupdategui,
+		Aresize,
+		Amouse,
+		Aaltend,
+	};
+	Alt a[] = {
+		[Aupdategui] =
+			{updatechan, &i, CHANRCV},
+		[Aresize] =
+			{mouse->resizec, nil, CHANRCV},
+		[Amouse] =
+			{mouse->c, &mouse->Mouse, CHANRCV},
+		[Aaltend] =
+			{nil, nil, CHANEND},
+	};
+
+	while(1){
+		unlockdisplay(display);
+		int which = alt(a);
+		lockdisplay(display);
+
+		switch(which){
+		case Aupdategui:
+			resized(i);
+			break;
+		case Aresize:
+			resized(1);
+			break;
+		case Amouse:
+			break;
+		}
+	}
+}
+
+void
+initgraphics(void)
+{
+	updatechan = chancreate(sizeof(int), 0);
+	proccreate(guiproc, nil, mainstacksize);
+	updategui(1);
+}