X-Git-Url: http://git.draconx.ca/gitweb/liblbx.git/blobdiff_plain/c6bde872a51bea0beb105d5b9fde0f4aad36ca1d..f9f3a47a274221c512a23a76dceb6b2b1ee1d6a6:/src/gui/lbxgui.c

diff --git a/src/gui/lbxgui.c b/src/gui/lbxgui.c
index 21dee9a..e9726a6 100644
--- a/src/gui/lbxgui.c
+++ b/src/gui/lbxgui.c
@@ -1,24 +1,62 @@
+/*
+ *  2ooM: The Master of Orion II Reverse Engineering Project
+ *  Graphical tool for inspecting LBX archives.
+ *  Copyright © 2010, 2014 Nick Bowler
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 #include <config.h>
+#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdbool.h>
 #include <math.h>
 
 #include <gtk/gtk.h>
 
 #include "lbx.h"
 #include "image.h"
+#include "lbxgui.h"
+
+#include "bg.xbm"
 
 static GtkTreeStore *archives;
 static GtkBuilder *builder;
 
 static GtkWidget *canvas;
-static LBX_IMG *image;
-/* LBX images can have up to three palettes, with each superseding the last. */
+
+static cairo_surface_t *framebuf;
+static cairo_pattern_t *bg_pattern;
+static bool bg_stipple;
+
+static struct lbx_image *image;
+static struct lbx_colour palette[256];
+
+/* We support stacking up to three palettes, with each superseding the last. */
 static struct lbx_colour palette_external[256];
 static struct lbx_colour palette_internal[256];
 static struct lbx_colour palette_override[256];
 
-GdkPixbuf *framebuf;
+static void refresh_palette(void)
+{
+	memcpy(palette, palette_external, sizeof palette);
+	lbxgui_stack_palette(palette, palette_internal);
+	lbxgui_stack_palette(palette, palette_override);
+
+	if (framebuf)
+		lbxgui_render_restart(framebuf);
+}
 
 void play_toggled(GtkToggleButton *button, gpointer data)
 {
@@ -38,65 +76,23 @@ void play_toggled(GtkToggleButton *button, gpointer data)
 	}
 }
 
-static void get_colour(unsigned char index, unsigned char out[static 3])
-{
-	struct lbx_colour *colour;
-
-	if (palette_override[index].active)
-		colour = palette_override + index;
-	else if (palette_internal[index].active)
-		colour = palette_internal + index;
-	else if (palette_external[index].active)
-		colour = palette_external + index;
-	else
-		colour = &(struct lbx_colour) { .red = 0xff, .blue = 0xff };
-
-	out[0] = colour->red;
-	out[1] = colour->green;
-	out[2] = colour->blue;
-}
-
-static int render_frame(LBX_IMG *img, GdkPixbuf *buf, unsigned frame)
+void set_frame(GtkSpinButton *spin, gpointer data)
 {
-	unsigned char **imgdata, **imgmask;
-	struct lbx_imginfo info;
-	unsigned char *data;
-	unsigned stride;
-
-	lbximg_getinfo(image, &info);
-	imgdata = lbximg_getframe(image, frame);
-	if (!imgdata) {
-		printf("failed to decode frame %u\n", frame);
-		return -1;
-	}
-	imgmask = lbximg_getmask(image);
-
-	data   = gdk_pixbuf_get_pixels(buf);
-	stride = gdk_pixbuf_get_rowstride(buf);
-
-	for (unsigned i = 0; i < info.height; i++) {
-		unsigned char (*p)[3] = (void *)(data + i*stride);
-
-		for (unsigned j = 0; j < info.width; j++) {
-			if (imgmask[i][j]) {
-				get_colour(imgdata[i][j], p[j]);
-			} else {
-				p[j][0] = 0;
-				p[j][1] = 0;
-				p[j][2] = 0;
-			}
-		}
-	}
+	unsigned frame = gtk_spin_button_get_value_as_int(spin);
 
-	return 0;
+	if (image)
+		lbxgui_render_argb(framebuf, image, frame, palette);
+	gdk_window_invalidate_rect(canvas->window, NULL, FALSE);
 }
 
-void set_frame(GtkSpinButton *spin, gpointer data)
+static void redraw_image(void)
 {
-	unsigned frame = gtk_spin_button_get_value_as_int(spin);
+	GtkSpinButton *spin;
 
-	render_frame(image, framebuf, frame);
-	gdk_window_invalidate_rect(canvas->window, NULL, FALSE);
+	refresh_palette();
+
+	spin = GTK_SPIN_BUTTON(gtk_builder_get_object(builder, "framespin"));
+	set_frame(spin, NULL);
 }
 
 static void tick(void *p, double delta)
@@ -106,12 +102,12 @@ static void tick(void *p, double delta)
 	struct lbx_imginfo info;
 	GtkSpinButton   *spin;
 	GtkToggleButton *play;
-	unsigned frame;
+	unsigned frame, newframe;
 
 	if (!image)
 		return;
 
-	lbximg_getinfo(image, &info);
+	lbx_img_getinfo(image, &info);
 	spin = GTK_SPIN_BUTTON(gtk_builder_get_object(builder, "framespin"));
 	play = GTK_TOGGLE_BUTTON(gtk_builder_get_object(builder, "playbutton"));
 
@@ -120,20 +116,22 @@ static void tick(void *p, double delta)
 		return;
 
 	elapsed += delta;
+	newframe = frame;
 	while (elapsed > seconds_per_frame) {
 		elapsed -= seconds_per_frame;
 
-		if (++frame >= info.nframes) {
-			if (!info.looping) {
+		if (++newframe >= image->frames) {
+			if (image->leadin == image->frames - 1) {
 				gtk_toggle_button_set_active(play, FALSE);
 				break;
 			}
 
-			frame = info.loopstart;
+			newframe = image->leadin;
 		}
-
-		gtk_spin_button_set_value(spin, frame);
 	}
+
+	if (frame != newframe)
+		gtk_spin_button_set_value(spin, newframe);
 }
 
 static gboolean timeout(gpointer data)
@@ -158,56 +156,77 @@ static gboolean timeout(gpointer data)
 
 gboolean canvas_expose(GtkWidget *canvas, GdkEventExpose *event, gpointer data)
 {
-	if (!framebuf)
-		return TRUE;
+	cairo_t *cr;
+
+	cr = gdk_cairo_create(canvas->window);
+
+	if (bg_stipple) {
+		cairo_set_source_rgb(cr, 0.6, 0.6, 0.6);
+		gdk_cairo_rectangle(cr, &event->area);
+		cairo_fill(cr);
 
-	gdk_draw_pixbuf(canvas->window, NULL, framebuf,
-		event->area.x, event->area.y, event->area.x, event->area.y,
-		event->area.width, event->area.height,
-		GDK_RGB_DITHER_NORMAL, 0, 0);
+		cairo_set_source_rgb(cr, 0.3, 0.3, 0.3);
+		gdk_cairo_rectangle(cr, &event->area);
+		cairo_mask(cr, bg_pattern);
+	} else {
+		cairo_set_source_rgb(cr, 0, 0, 0);
+		gdk_cairo_rectangle(cr, &event->area);
+		cairo_fill(cr);
+	}
+
+	cairo_set_source_surface(cr, framebuf, 0, 0);
+	gdk_cairo_rectangle(cr, &event->area);
+	cairo_fill(cr);
+
+	cairo_destroy(cr);
 
 	return TRUE;
 }
 
-static int init_framedata(int reset)
+static int alloc_framebuffer(struct lbx_image *img)
 {
-	struct lbx_imginfo info;
 	GtkSpinButton *spin;
 
-	if (!image)
-		return 0;
-
-	lbximg_getinfo(image, &info);
-	framebuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
-		info.width, info.height);
-	if (!framebuf) {
-		printf("failed to allocate pixbuf\n");
-		return -1;
-	}
-
-	gtk_widget_set_size_request(canvas, info.width, info.height);
+	cairo_surface_destroy(framebuf);
+	framebuf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
+	                                      img->width, img->height);
 
 	spin = GTK_SPIN_BUTTON(gtk_builder_get_object(builder, "framespin"));
-	gtk_spin_button_set_range(spin, 0, info.nframes-1);
+	gtk_spin_button_set_range(spin, 0, img->frames-1);
 	gtk_spin_button_set_value(spin, 0);
-	set_frame(spin, NULL);
+
+	gtk_widget_set_size_request(canvas, img->width, img->height);
 	return 0;
 }
 
-static int img_close(void *handle)
+static int close_image(void *handle)
 {
 	lbx_file_close(handle);
 	return 0;
 }
 
-void set_override_data(GtkComboBox *combo)
+static struct lbx_image *load_lbx_image(struct lbx *archive, unsigned index)
+{
+	LBXfile *file;
+	struct lbx_image *image;
+
+	file = lbx_file_open(archive, index);
+	g_return_val_if_fail(file, NULL);
+
+	image = lbx_img_open(file, &lbx_arch_fops, close_image);
+	if (!image)
+		lbx_file_close(file);
+	return image;
+}
+
+void set_override(GtkComboBox *combo)
 {
 	GtkTreeIter iter;
 	gpointer lbx;
 	guint    index;
-	LBXfile  *f;
-	LBX_IMG  *img;
+	struct lbx_image *img;
 
+	memset(palette_override, 0, sizeof palette_override);
 	if (!gtk_combo_box_get_active_iter(combo, &iter))
 		return;
 
@@ -216,29 +235,22 @@ void set_override_data(GtkComboBox *combo)
 		2, &index,
 		-1);
 
-	f = lbx_file_open(lbx, index);
-	if (f) {
-		img = lbximg_open(f, &lbx_arch_fops, NULL);
-		if (img) {
-			memset(palette_override, 0, sizeof palette_override);
-			lbximg_getpalette(img, palette_override);
-			lbximg_close(img);
-			init_framedata(0);
-		}
-
-		lbx_file_close(f);
-	} else {
-		puts("damn");
+	img = load_lbx_image(lbx, index);
+	if (img) {
+		lbx_img_getpalette(img, palette_override);
+		lbx_img_close(img);
+		redraw_image();
 	}
 }
 
-void set_palette_data(GtkComboBox *combo)
+void set_palette(GtkComboBox *combo)
 {
 	GtkTreeIter iter;
 	gpointer lbx;
 	guint    index;
 	LBXfile  *f;
 
+	memset(palette_external, 0, sizeof palette_external);
 	if (!gtk_combo_box_get_active_iter(combo, &iter))
 		return;
 
@@ -249,21 +261,28 @@ void set_palette_data(GtkComboBox *combo)
 
 	f = lbx_file_open(lbx, index);
 	if (f) {
-		if (lbximg_loadpalette(f, &lbx_arch_fops, palette_external))
+		if (lbx_img_loadpalette(f, &lbx_arch_fops, palette_external))
 			memset(palette_external, 0, sizeof palette_external);
 		lbx_file_close(f);
 	}
 
-	init_framedata(0);
+	redraw_image();
 }
 
-void set_image_data(GtkComboBox *combo)
+void set_image(GtkComboBox *combo)
 {
 	GtkTreeIter iter;
 	gpointer lbx;
 	guint    index;
-	LBXfile  *f;
+	struct lbx_image *img;
+
+	if (image) {
+		lbx_img_close(image);
+		image = NULL;
+	}
 
+	gtk_widget_set_size_request(canvas, -1, -1);
+	memset(palette_internal, 0, sizeof palette_internal);
 	if (!gtk_combo_box_get_active_iter(combo, &iter))
 		return;
 
@@ -272,27 +291,24 @@ void set_image_data(GtkComboBox *combo)
 		2, &index,
 		-1);
 
-	f = lbx_file_open(lbx, index);
-	if (f) {
-		image = lbximg_open(f, &lbx_arch_fops, img_close);
-		if (image) {
-			memset(palette_internal, 0, sizeof palette_internal);
-			if (lbximg_getpalette(image, palette_internal) == -1) {
-				puts("crap");
-				lbximg_close(image);
-			}
-
-			if (init_framedata(1) == -1) {
-				puts("crap");
-				lbximg_close(image);
-			}
-		} else {
-			puts("fuck");
-			lbx_file_close(f);
+	img = load_lbx_image(lbx, index);
+	if (img) {
+		if (lbx_img_getpalette(img, palette_internal) == -1) {
+			puts("crap");
+			lbx_img_close(img);
 		}
-	} else {
-		puts("damn");
+
+		alloc_framebuffer(img);
 	}
+
+	image = img;
+	redraw_image();
+}
+
+void set_background(GtkCheckMenuItem *item, gpointer data)
+{
+	bg_stipple = gtk_check_menu_item_get_active(item);
+	redraw_image();
 }
 
 void show_about(GtkWidget *widget)
@@ -307,12 +323,12 @@ void show_about(GtkWidget *widget)
 		NULL);
 }
 
-int load_archive(const char *path)
+static int load_archive(const char *path)
 {
 	gchar *basename;
 	GtkTreeIter iter1, iter2;
 	unsigned nfiles;
-	LBX *lbx;
+	struct lbx *lbx;
 
 	lbx = lbx_fopen(path);
 	if (!lbx)
@@ -326,11 +342,10 @@ int load_archive(const char *path)
 		-1);
 	g_free(basename);
 
-	nfiles = lbx_numfiles(lbx);
-	for (unsigned i = 0; i < nfiles; i++) {
+	for (unsigned i = 0; i < lbx->nfiles; i++) {
 		struct lbx_statbuf stat;
 
-		lbx_stat(lbx, i, &stat);
+		lbx_file_stat(lbx, i, &stat);
 		gtk_tree_store_append(archives, &iter2, &iter1);
 		gtk_tree_store_set(archives, &iter2,
 			0, stat.name,
@@ -342,7 +357,7 @@ int load_archive(const char *path)
 	return 0;
 }
 
-void load_error(const char *name, GtkWindow *window)
+static void load_error(const char *name, GtkWindow *window)
 {
 	GtkWidget *dialog;
 
@@ -398,11 +413,36 @@ void open_archive(GtkWidget *widget)
 	gtk_widget_destroy(GTK_WIDGET(chooser));
 }
 
-static void interface_init(void)
+static void clear_combobox(GtkEntry *entry, GtkEntryIconPosition pos,
+                           GdkEvent *event, gpointer data)
+{
+	GtkComboBox *combo = data;
+
+	gtk_entry_set_text(entry, "");
+	gtk_combo_box_set_active(combo, -1);
+	redraw_image();
+}
+
+static void init_combobox(GtkBuilder *builder, const char *name)
+{
+	GtkComboBox *combo;
+	GtkEntry *entry;
+
+	combo = GTK_COMBO_BOX(gtk_builder_get_object(builder, name));
+	gtk_combo_box_set_model(combo, GTK_TREE_MODEL(archives));
+	gtk_combo_box_entry_set_text_column(GTK_COMBO_BOX_ENTRY(combo), 0);
+
+	entry = GTK_ENTRY(gtk_bin_get_child(GTK_BIN(combo)));
+	g_signal_connect(G_OBJECT(entry), "icon-press",
+		G_CALLBACK(clear_combobox), combo);
+	gtk_entry_set_icon_from_stock(entry, GTK_ENTRY_ICON_SECONDARY,
+		GTK_STOCK_CLEAR);
+}
+
+static void init_interface(void)
 {
 	GtkTreeViewColumn *column;
 	GtkCellRenderer *renderer;
-	GtkComboBox *combo;
 	GtkTreeView *tree;
 
 	renderer = gtk_cell_renderer_text_new();
@@ -414,21 +454,86 @@ static void interface_init(void)
 	gtk_tree_view_set_model(tree, GTK_TREE_MODEL(archives));
 	gtk_tree_view_append_column(tree, column);
 
-	combo = GTK_COMBO_BOX(gtk_builder_get_object(builder, "palettechooser"));
-	gtk_combo_box_set_model(combo, GTK_TREE_MODEL(archives));
-	gtk_combo_box_entry_set_text_column(GTK_COMBO_BOX_ENTRY(combo), 0);
+	init_combobox(builder, "palettechooser");
+	init_combobox(builder, "imagechooser");
+	init_combobox(builder, "overchooser");
+}
 
-	combo = GTK_COMBO_BOX(gtk_builder_get_object(builder, "imagechooser"));
-	gtk_combo_box_set_model(combo, GTK_TREE_MODEL(archives));
-	gtk_combo_box_entry_set_text_column(GTK_COMBO_BOX_ENTRY(combo), 0);
+/*
+ * Reverse the bits in each byte of a 32-bit word.
+ */
+static guint32 reverse4b(guint32 v)
+{
+	v = ((v >> 1) & 0x55555555) | ((v & 0x55555555) << 1);
+	v = ((v >> 2) & 0x33333333) | ((v & 0x33333333) << 2);
+	v = ((v >> 4) & 0x0f0f0f0f) | ((v & 0x0f0f0f0f) << 4);
+	return v;
+}
 
-	combo = GTK_COMBO_BOX(gtk_builder_get_object(builder, "overchooser"));
-	gtk_combo_box_set_model(combo, GTK_TREE_MODEL(archives));
-	gtk_combo_box_entry_set_text_column(GTK_COMBO_BOX_ENTRY(combo), 0);
+static cairo_surface_t *
+xbm_to_cairo(const void *xbmdata, int width, int height)
+{
+	const unsigned char *data = xbmdata;
+	unsigned char *sdata;
+	cairo_surface_t *s;
+	int stride;
+
+	s = cairo_image_surface_create(CAIRO_FORMAT_A1, width, height);
+	if (cairo_surface_status(s) != CAIRO_STATUS_SUCCESS)
+		return s;
+
+	sdata = cairo_image_surface_get_data(s);
+	stride = cairo_image_surface_get_stride(s);
+	assert(stride % 4 == 0);
+	width = (width + 7) / 8;
+
+	cairo_surface_flush(s);
+	for (int y = 0; y < height; y++) {
+		/*
+		 * Cairo is nuts.  The mapping of bits to pixels in the A1
+		 * format actually depends on the host *byte* ordering, so
+		 * we actually need these two separate cases.
+		 */
+		if (G_BYTE_ORDER == G_LITTLE_ENDIAN) {
+			/* Easy, XBM and Cairo match in this case */
+			memcpy(sdata, data, width);
+		} else {
+			/* No such luck, we have to convert manually */
+			for (int x = 0; x < width; x += 4) {
+				guint32 word = 0;
+
+				memcpy(&word, data+x, MIN(4, width-x));
+				word = reverse4b(word);
+				memcpy(sdata+x, &word, 4);
+			}
+		}
+
+		sdata += stride;
+		data += width;
+	}
+	cairo_surface_mark_dirty(s);
+
+	return s;
+}
+
+static void init_background(GdkDrawable *drawable)
+{
+	cairo_surface_t *bg;
+	GtkWidget *check;
+
+	bg = xbm_to_cairo(bg_bits, bg_width, bg_height);
+	bg_pattern = cairo_pattern_create_for_surface(bg);
+	cairo_pattern_set_extend(bg_pattern, CAIRO_EXTEND_REPEAT);
+	cairo_surface_destroy(bg);
+
+	check = GTK_WIDGET(gtk_builder_get_object(builder, "menu-background"));
+	gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(check), TRUE);
+	set_background(GTK_CHECK_MENU_ITEM(check), NULL);
 }
 
 int main(int argc, char **argv)
 {
+	extern char lbxgui_glade[];
 	GtkWidget *window;
 	GError *err = NULL;
 
@@ -443,7 +548,7 @@ int main(int argc, char **argv)
 		load_archive(*argv++);
 
 	builder = gtk_builder_new();
-	if (!gtk_builder_add_from_file(builder, "src/gui/lbxgui.glade", &err)) {
+	if (!gtk_builder_add_from_string(builder, lbxgui_glade, -1, &err)) {
 		fprintf(stderr, "%s\n", err->message);
 		return EXIT_FAILURE;
 	}
@@ -451,10 +556,12 @@ int main(int argc, char **argv)
 	window = GTK_WIDGET(gtk_builder_get_object(builder, "mainwindow"));
 	canvas = GTK_WIDGET(gtk_builder_get_object(builder, "canvas"));
 
-	interface_init();
+	init_interface();
 	gtk_builder_connect_signals(builder, window);
 
-	g_timeout_add(10, timeout, NULL);
+	g_timeout_add_full(G_PRIORITY_DEFAULT_IDLE, 10, timeout, NULL, NULL);
 	gtk_widget_show_all(window);
+
+	init_background(canvas->window);
 	gtk_main();
 }