From: John Tsiombikas <nuclear@member.fsf.org>
Date: Wed, 8 Jan 2020 10:06:11 +0000 (+0200)
Subject: widget disabling and autosize with minimum
X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=instimg;a=commitdiff_plain;h=5ac430128e1fa0e70e1cb232bd5d756b7e8c6abf

widget disabling and autosize with minimum
---

diff --git a/src/main.c b/src/main.c
index 68b4c98..b49c9e3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -31,7 +31,7 @@ int WINAPI WinMain(HINSTANCE hinst, HINSTANCE hprevinst, char *cmdline, int show
 	lb_instto = wgt_label(win, "Install to device:", 10, 10);
 
 	x = wgt_xpos_after(lb_instto, WGT_AUTO);
-	cb_devs = wgt_combo(win, items, num_rawdev, 0, x, 10, WGT_AUTO, WGT_AUTO,
+	cb_devs = wgt_combo(win, items, num_rawdev, 0, x, 10, WGT_AUTOMIN(30), WGT_AUTO,
 			onmodify);
 
 	y = wgt_ypos_after(cb_devs, 16);
@@ -44,6 +44,11 @@ int WINAPI WinMain(HINSTANCE hinst, HINSTANCE hprevinst, char *cmdline, int show
 	x = wgt_xpos_after(bn_inst, WGT_AUTO);
 	bn_cancel = wgt_button(win, "Cancel", x, y, WGT_AUTO, WGT_AUTO, onclick);
 
+	if(!num_rawdev) {
+		wgt_disable_widget(cb_devs);
+		wgt_disable_widget(bn_inst);
+	}
+
 	while(GetMessage(&msg, 0, 0, 0)) {
 		TranslateMessage(&msg);
 		DispatchMessage(&msg);
@@ -65,4 +70,4 @@ static void onmodify(struct wgt_widget *w)
 		const char *selstr = wgt_get_combo_item(w, sel);
 		MessageBox(0, selstr, "selected item", MB_OK);
 	}
-}
\ No newline at end of file
+}
diff --git a/src/widgets.c b/src/widgets.c
index 2c08856..707d515 100644
--- a/src/widgets.c
+++ b/src/widgets.c
@@ -24,6 +24,8 @@ struct wgt_widget {
 	char **itemlist;
 	int num_items;
 
+	int disabled;
+
 	wgt_callback cb_click;
 	wgt_callback cb_modify;
 };
@@ -118,6 +120,23 @@ void wgt_destroy_widget(struct wgt_widget *w)
 	free(w->itemlist);
 }
 
+void wgt_enable_widget(struct wgt_widget *w)
+{
+	w->disabled = 0;
+	EnableWindow(w->handle, 1);
+}
+
+void wgt_disable_widget(struct wgt_widget *w)
+{
+	w->disabled = 1;
+	EnableWindow(w->handle, 0);
+}
+
+int wgt_widget_enabled(struct wgt_widget *w)
+{
+	return !w->disabled;
+}
+
 struct wgt_window *wgt_widget_window(struct wgt_widget *w)
 {
 	return w->win;
@@ -285,7 +304,10 @@ struct wgt_widget *wgt_combo(struct wgt_window *win, const char **items, int num
 		return 0;
 	}
 
-	max_width = max_height = sum_height = 0;
+	wgt_string_size(win, "00", &textsz);
+	max_width = width < 0 && width != WGT_AUTO ? -width : textsz.width;
+	max_height = height < 0 && height != WGT_AUTO ? -height : textsz.height;
+	sum_height = num_items ? 0 : max_height;
 
 	for(i=0; i<num_items; i++) {
 		wgt_string_size(win, items[i], &textsz);
@@ -297,7 +319,7 @@ struct wgt_widget *wgt_combo(struct wgt_window *win, const char **items, int num
 	if(height < 0) height = sum_height * 2;
 
 
-	if(!(w->handle = CreateWindow("COMBOBOX", items[0],
+	if(!(w->handle = CreateWindow("COMBOBOX", items[0] ? items[0] : "",
 			WS_CHILD | WS_VISIBLE | CBS_DROPDOWNLIST | CBS_HASSTRINGS,
 			x, y, width, height, win->handle, 0, GetModuleHandle(0), 0))) {
 		fprintf(stderr, "wgt_combo: failed to create window\n");
@@ -322,7 +344,9 @@ struct wgt_widget *wgt_combo(struct wgt_window *win, const char **items, int num
 
 	if(sel < 0) sel = 0;
 	if(sel >= num_items) sel = num_items - 1;
-	SendMessage(w->handle, CB_SETCURSEL, sel, 0);
+	if(sel >= 0) {
+		SendMessage(w->handle, CB_SETCURSEL, sel, 0);
+	}
 
 	w->rect.x = x;
 	w->rect.y = y;
diff --git a/src/widgets.h b/src/widgets.h
index a81da8f..33cd490 100644
--- a/src/widgets.h
+++ b/src/widgets.h
@@ -3,7 +3,8 @@
 
 #include <windows.h>
 
-#define WGT_AUTO	(-0x4242)
+#define WGT_AUTO		(-0x4242)
+#define WGT_AUTOMIN(x)	(-x)
 
 struct wgt_window;
 struct wgt_widget;
@@ -19,6 +20,9 @@ struct wgt_window *wgt_window(const char *title, int width, int height);
 void wgt_destroy_window(struct wgt_window *win);
 void wgt_destroy_widget(struct wgt_widget *w);
 
+void wgt_enable_widget(struct wgt_widget *w);
+void wgt_disable_widget(struct wgt_widget *w);
+int wgt_widget_enabled(struct wgt_widget *w);
 struct wgt_window *wgt_widget_window(struct wgt_widget *w);
 struct wgt_rect *wgt_widget_rect(struct wgt_widget *w, struct wgt_rect *rect);
 int wgt_xpos_after(struct wgt_widget *w, int pad);
@@ -36,4 +40,4 @@ struct wgt_widget *wgt_combo(struct wgt_window *win, const char **items, int num
 int wgt_combo_selected(struct wgt_widget *w);
 const char *wgt_get_combo_item(struct wgt_widget *w, int idx);
 
-#endif	/* WIDGETS_H_ */
\ No newline at end of file
+#endif	/* WIDGETS_H_ */