Basic UI skeleton

3 files changed, 192 insertions, 11 deletions

diff --git a/Makefile b/Makefile
index e78a745..674d42c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 .PHONY: all clean run sanitize backends windows full backends-full install
-OBJS = core/core.o core/config.o core/backend.o core/plugin.o core/routing.o
+CORE_OBJS = core/core.o core/config.o core/backend.o core/plugin.o core/routing.o
 
 PREFIX ?= /usr
 PLUGIN_INSTALL = $(PREFIX)/lib/midimonster
@@ -20,17 +20,17 @@ core/%: CFLAGS += -I./
 midimonster: LDLIBS = -ldl
 # Replace version string with current git-describe if possible
 ifneq "$(GITVERSION)" ""
-midimonster: CFLAGS += -DMIDIMONSTER_VERSION=\"$(GITVERSION)\"
-midimonster.exe: CFLAGS += -DMIDIMONSTER_VERSION=\"$(GITVERSION)\"
-assets/resource.o: RCCFLAGS += -DMIDIMONSTER_VERSION=\\\"$(GITVERSION)\\\"
+CFLAGS += -DMIDIMONSTER_VERSION=\"$(GITVERSION)\"
 endif
 
 # Work around strange linker passing convention differences in Linux and OSX
 ifeq ($(SYSTEM),Linux)
 midimonster: LDFLAGS += -Wl,-export-dynamic
+midimonster_gui: LDFLAGS += -Wl,-export-dynamic
 endif
 ifeq ($(SYSTEM),Darwin)
 midimonster: LDFLAGS += -Wl,-export_dynamic
+midimonster_gui: LDFLAGS += -Wl,-export_dynamic
 endif
 
 # Allow overriding the locations for backend plugins and default configuration
@@ -56,8 +56,16 @@ backends-full:
 	$(MAKE) -C backends full
 
 # This rule can not be the default rule because OSX the target prereqs are not exactly the build prereqs
-midimonster: midimonster.c portability.h $(OBJS)
-	$(CC) $(CFLAGS) $(LDFLAGS) $< $(OBJS) $(LDLIBS) -o $@
+midimonster: midimonster.c portability.h $(CORE_OBJS)
+	$(CC) $(CFLAGS) $(LDFLAGS) $< $(CORE_OBJS) $(LDLIBS) -o $@
+
+# The minimal GUI works reasonably well with both gtk+-2.0 and gtk+-3.0
+midimonster_gui: GTK_VERSION ?= gtk+-3.0
+midimonster_gui: LDLIBS = -ldl
+midimonster_gui: GTK_CFLAGS ?= -Wno-pedantic $(shell pkg-config --cflags $(GTK_VERSION))
+midimonster_gui: GTK_LDLIBS ?= $(shell pkg-config --libs $(GTK_VERSION))
+midimonster_gui: midimonster_gui.c portability.h $(CORE_OBJS)
+	$(CC) $(CFLAGS) $(GTK_CFLAGS) $(LDFLAGS) $< $(CORE_OBJS) $(LDLIBS) $(GTK_LDLIBS) -o $@
 
 assets/resource.o: assets/midimonster.rc assets/midimonster.ico
 	$(RCC) $(RCCFLAGS) $< -o $@ --output-format=coff
@@ -70,15 +78,15 @@ midimonster.exe: RCC ?= x86_64-w64-mingw32-windres
 midimonster.exe: CFLAGS += -Wno-format
 midimonster.exe: LDLIBS = -lws2_32
 midimonster.exe: LDFLAGS += -Wl,--out-implib,libmmapi.a
-midimonster.exe: midimonster.c portability.h $(OBJS) assets/resource.o
-	$(CC) $(CFLAGS) $(LDFLAGS) $< $(OBJS) assets/resource.o $(LDLIBS) -o $@
+midimonster.exe: midimonster.c portability.h $(CORE_OBJS) assets/resource.o
+	$(CC) $(CFLAGS) $(LDFLAGS) $< $(CORE_OBJS) assets/resource.o $(LDLIBS) -o $@
 
 clean:
-	$(RM) midimonster
+	$(RM) midimonster midimonster_gui
 	$(RM) midimonster.exe
 	$(RM) libmmapi.a
 	$(RM) assets/resource.o
-	$(RM) $(OBJS)
+	$(RM) $(CORE_OBJS)
 	$(MAKE) -C backends clean
 
 run:
diff --git a/midimonster.c b/midimonster.c
index d00f116..b1eafdf 100644
--- a/midimonster.c
+++ b/midimonster.c
@@ -39,7 +39,6 @@ static int usage(char* fn){
 	return EXIT_FAILURE;
 }
 
-
 static int platform_initialize(){
 	#ifdef _WIN32
 	unsigned error_mode = SetErrorMode(0);
diff --git a/midimonster_gui.c b/midimonster_gui.c
new file mode 100644
index 0000000..cac2c77
--- /dev/null
+++ b/midimonster_gui.c
@@ -0,0 +1,174 @@
+#include <stdio.h>
+#include <gtk/gtk.h>
+
+#ifndef _WIN32
+	#define MM_API __attribute__((visibility("default")))
+#else
+	#define MM_API __attribute__((dllexport))
+#endif
+
+#include "midimonster.h"
+#include "core/core.h"
+#include "core/config.h"
+
+/*
+ * TODO
+ *  * disable menu items (load, start, stop) when appropriate
+ *  * ringbuffer for log entries
+ */
+
+static GtkTreeView* list_view = NULL;
+static GtkWidget* window = NULL;
+
+enum {
+	UI_NONE_ID = 0,
+	UI_MENU_EXIT,
+	UI_MENU_LOAD,
+	UI_MENU_START,
+	UI_MENU_STOP,
+	UI_MENU_ABOUT,
+	UI_MENU_HOMEPAGE,
+	UI_SENTINEL_ID
+};
+
+static void ui_listview_push(char* module, char* message){
+	GtkTreeIter iter;
+	GtkListStore* list_store = GTK_LIST_STORE(gtk_tree_view_get_model(list_view));
+	gtk_list_store_append(list_store, &iter);
+	gtk_list_store_set(list_store, &iter, 0, module, 1, message, -1);
+	//return gtk_tree_model_iter_n_children(GTK_TREE_MODEL(list_store),NULL) - 1;
+}
+
+MM_API int log_printf(int level, char* module, char* fmt, ...){
+	int rv = 0;
+	va_list args;
+	va_start(args, fmt);
+	fprintf(stderr, "%s%s\t", level ? "debug/" : "", module);
+	rv = vfprintf(stderr, fmt, args);
+	va_end(args);
+	return rv;
+}
+
+static void ui_filechooser(){
+	GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
+	gint res;
+
+	GtkWidget* dialog = gtk_file_chooser_dialog_new("Load configuration", GTK_WINDOW(window), action, "_Cancel", GTK_RESPONSE_CANCEL, "_Open", GTK_RESPONSE_ACCEPT, NULL);
+	res = gtk_dialog_run(GTK_DIALOG(dialog));
+	if(res == GTK_RESPONSE_ACCEPT){
+		char* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
+		ui_listview_push("ui", filename);
+		g_free(filename);
+	}
+
+	gtk_widget_destroy(dialog);
+}
+
+static gboolean ui_menu_handler(GtkWidget* widget, GdkEvent* raw_event, gpointer data){
+	GdkEventButton* event = (GdkEventButton*) raw_event;
+	if(event->type != GDK_BUTTON_PRESS){
+		return FALSE;
+	}
+
+	switch((size_t) data){
+		case UI_MENU_EXIT:
+			gtk_main_quit();
+			break;
+		case UI_MENU_START:
+			ui_listview_push("ui", "Starting midimonster core");
+			break;
+		case UI_MENU_LOAD:
+			ui_filechooser();
+			break;
+		case UI_MENU_STOP:
+			ui_listview_push("ui", "Stopping midimonster core");
+			break;
+		case UI_MENU_HOMEPAGE:
+			//gtk_show_uri(NULL, "https://midimonster.net/", event->time, NULL);
+			break;
+		default:
+			break;
+	}
+	return TRUE;
+}
+
+static void ui_menu_item(GtkWidget* menu, char* title, size_t identifier, void* callback){
+	GtkWidget* item = gtk_menu_item_new_with_label(title);
+	gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
+	//g_signal_connect(item, "activate", G_CALLBACK(callback), (gpointer) identifier);
+	g_signal_connect(item, "event", G_CALLBACK(callback), (gpointer) identifier);
+	gtk_widget_show(item);
+}
+
+static void ui_menu_submenu(GtkWidget* menu, char* title, GtkWidget* submenu){
+	GtkWidget* item = gtk_menu_item_new_with_label(title);
+	gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
+	gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
+	gtk_widget_show(item);
+}
+
+static void ui_rootmenu(GtkWidget* menu_bar){
+	GtkWidget* file_menu = gtk_menu_new();
+	GtkWidget* translation_menu = gtk_menu_new();
+	GtkWidget* help_menu = gtk_menu_new();
+
+	ui_menu_item(file_menu, "Load configuration", UI_MENU_LOAD, ui_menu_handler);
+	ui_menu_item(file_menu, "Exit", UI_MENU_EXIT, ui_menu_handler);
+
+	ui_menu_item(translation_menu, "Start", UI_MENU_START, ui_menu_handler);
+	ui_menu_item(translation_menu, "Stop", UI_MENU_STOP, ui_menu_handler);
+
+	ui_menu_item(help_menu, "About", UI_MENU_ABOUT, ui_menu_handler);
+	ui_menu_item(help_menu, "Open homepage", UI_MENU_HOMEPAGE, ui_menu_handler);
+
+	ui_menu_submenu(menu_bar, "File", file_menu);
+	ui_menu_submenu(menu_bar, "Translation", translation_menu);
+	ui_menu_submenu(menu_bar, "Help", help_menu);
+}
+
+static GtkTreeViewColumn* ui_list_column(GtkTreeView* listview, char* name, size_t identifier){
+	GtkTreeViewColumn* column = gtk_tree_view_column_new_with_attributes(name, gtk_cell_renderer_text_new(), "text", identifier, NULL);
+	gtk_tree_view_append_column(GTK_TREE_VIEW(listview), column);
+	gtk_tree_view_column_set_resizable(column, TRUE);
+	return column;
+}
+
+int main(int argc, char** argv){
+	GtkWidget* menu_bar, *scroller, *vbox;
+
+	gtk_init(&argc, &argv);
+	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+	gtk_widget_set_size_request(GTK_WIDGET(window), 400, 200);
+	gtk_window_set_title(GTK_WINDOW(window), MIDIMONSTER_VERSION);
+	g_signal_connect(window, "delete-event", G_CALLBACK(gtk_main_quit), NULL);
+	//gtk_container_set_border_width(GTK_CONTAINER(window), 10);
+
+	menu_bar = gtk_menu_bar_new();
+	ui_rootmenu(menu_bar);
+
+	#if GTK_MAJOR_VERSION >= 3
+	vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+	#else
+	vbox = gtk_vbox_new(FALSE, 0);
+	#endif
+	gtk_box_pack_start(GTK_BOX(vbox), menu_bar, FALSE, FALSE, 2);
+
+	GtkListStore *store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_STRING, -1);
+	list_view = GTK_TREE_VIEW(gtk_tree_view_new_with_model(GTK_TREE_MODEL(store)));
+	g_object_unref(store);
+	gtk_tree_view_set_reorderable(list_view, FALSE);
+	gtk_tree_selection_set_mode(gtk_tree_view_get_selection(GTK_TREE_VIEW(list_view)), GTK_SELECTION_NONE);
+
+	ui_list_column(list_view, "Module", 0);
+	ui_list_column(list_view, "Message", 1);
+
+	scroller = gtk_scrolled_window_new(NULL, NULL);
+	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroller), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+	gtk_container_add(GTK_CONTAINER(scroller), GTK_WIDGET(list_view));
+	gtk_box_pack_end(GTK_BOX(vbox), GTK_WIDGET(scroller), TRUE, TRUE, 2);
+
+	gtk_container_add(GTK_CONTAINER(window), vbox);
+	gtk_widget_show_all(window);
+	gtk_main();
+	return 0;
+}