Second commit

Signed-off-by: Mattias Andrée <m@maandree.se>

1 files changed, 197 insertions, 0 deletions

diff --git a/common.h b/common.h
new file mode 100644
index 0000000..aaf4b09
--- /dev/null
+++ b/common.h
@@ -0,0 +1,197 @@
+/* See LICENSE file for copyright and license details. */
+#ifndef SCROLL_AMOUNT
+# define SCROLL_AMOUNT 30
+#endif
+#ifndef DRAG_ICON_SIZE
+# define DRAG_ICON_SIZE 128
+#endif
+#ifndef PREVIEW_WIDTH
+# define PREVIEW_WIDTH 192
+#endif
+#ifndef PREVIEW_HEIGHT
+# define PREVIEW_HEIGHT 256
+#endif
+
+#if defined(__GNUC__)
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+# pragma GCC diagnostic ignored "-Wstrict-prototypes"
+#endif
+#include <gdk/gdkkeysyms.h>
+#include <gtk/gtk.h>
+#include <libsimple.h>
+#include <libsimple-arg.h>
+#if defined(__GNUC__)
+# pragma GCC diagnostic pop
+#endif
+
+#if defined(__GNUC__)
+# pragma GCC diagnostic ignored "-Wunsuffixed-float-constants"
+# pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
+# pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+#endif
+
+#if defined(__GNUC__)
+# define PURE __attribute__((__pure__))
+#else
+# define PURE
+#endif
+
+#include "logical-scroll-pane.h"
+
+
+#define FLOAT_EQ(A, B) ((A) >= (B) && (A) <= (B))
+
+#define COMMA ,
+
+
+enum toggle_group {
+	GROUP_NONE,
+	GROUP_ZOOM
+};
+
+enum zoom_mode {
+	ZOOM_CUSTOM,
+	ZOOM_NORMAL,
+	ZOOM_FIT_WIDTH,
+	ZOOM_FIT_HEIGHT,
+	ZOOM_FIT_WINDOW,
+	ZOOM_BEST_FIT
+};
+
+enum transformation {
+	TRANS_NONE,          /* 1   */
+	TRANS_CLOCKWISE,     /* r   */
+	TRANS_180_DEGREES,   /* r²  */
+	TRANS_ANTICLOCKWISE, /* r³  */
+	TRANS_TRANSPOSE,     /* t   */
+	TRANS_FLOP,          /* rt  */
+	TRANS_ANTITRANSPOSE, /* r²t */
+	TRANS_FLIP,          /* r³t */
+	/*
+	 * t² = r⁴ = 1
+	 * trⁿ = r⁻ⁿt
+	 */
+	TRANS_NEGATIVE = 0x08
+};
+
+struct file {
+	char *path;
+	off_t size;
+	GdkPixbuf *image;
+};
+
+typedef double Zoom; /* TODO */
+
+
+/* dragging.c */
+void set_up_dragging(void);
+
+/* dropping.c */
+void set_up_dropping(void);
+
+/* events.c */
+void open_action(GtkAction *action, void *user);
+void reload_action(GtkAction *action, void *user);
+void print_action(GtkAction *action, void *user);
+void properties_action(GtkAction *action, void *user);
+void close_action(GtkAction *action, void *user);
+void fullscreen_action(GtkToggleAction *action, void *user);
+void reset_transformations_action(GtkAction *action, void *user);
+void rotate_clockwise_action(GtkAction *action, void *user);
+void rotate_180_degrees_action(GtkAction *action, void *user);
+void rotate_anticlockwise_action(GtkAction *action, void *user);
+void flop_action(GtkAction *action, void *user);
+void flip_action(GtkAction *action, void *user);
+void transpose_action(GtkAction *action, void *user);
+void antitranspose_action(GtkAction *action, void *user);
+void invert_action(GtkToggleAction *action, void *user);
+void zoom_in_action(GtkAction *action, void *user);
+void zoom_out_action(GtkAction *action, void *user);
+void normal_size_action(GtkToggleAction *action, void *user);
+void width_fit_action(GtkToggleAction *action, void *user);
+void height_fit_action(GtkToggleAction *action, void *user);
+void window_fit_action(GtkToggleAction *action, void *user);
+void best_fit_action(GtkToggleAction *action, void *user);
+void next_action(GtkAction *action, void *user);
+void previous_action(GtkAction *action, void *user);
+void first_action(GtkAction *action, void *user);
+void last_action(GtkAction *action, void *user);
+int key_pressed(GtkWidget *widget, GdkEventKey *event, void *user);
+int scroll_event(GtkWidget *widget, GdkEventScroll *event, void *user);
+
+/* files.c */
+extern struct file *files;
+extern size_t nfiles;
+extern size_t current_file;
+void free_files(void);
+size_t files_from_array(struct file *selected_files, size_t nselected_files);
+size_t files_from_list(struct file **files_out, GSList *selected_files);
+int set_files_from_argv(int argc, char **argv);
+struct file *get_file(void);
+int navigate_without_redraw(size_t jump, size_t move);
+
+/* filters.c */
+void add_image_filters(GtkFileChooser *chooser);
+void free_image_filters(void);
+
+/* image.c */
+extern GdkPixbuf *transformed_image;
+GdkPixbuf *get_image(void);
+GdkPixbuf *get_original_image(void);
+
+/* opening.c */
+int load_image(struct file *file, int errors_to_stderr);
+GtkFileChooser *construct_chooser(void);
+
+/* printing.c */
+void open_print(GdkPixbuf *image);
+
+/* properties.c */
+void open_properties(struct file *file);
+
+/* transform.c */
+extern enum transformation trans;
+GdkPixbuf *apply_transformations(GdkPixbuf *image);
+enum transformation reset_transformations_without_redraw(void);
+int add_transformation_without_redraw(enum transformation augment);
+void transform_point(enum transformation t, double *x, double *y, double *w, double *h);
+
+/* ui.c */
+extern GtkWidget *window;
+extern GtkWidget *display_area;
+extern GtkWidget *scroll;
+extern GtkToggleAction *fullscreen;
+void set_up_ui(void);
+void set_actions_sensitive(void);
+void clear_toggles(enum toggle_group group, GtkToggleAction *except);
+void set_fullscreen_mode(int active);
+int activate_fullscreen(void *user);
+int deactivate_fullscreen(void *user);
+void set_statusbar_message(const char *message);
+void free_ui(void);
+
+/* zoom.c */
+extern Zoom zoom;
+extern enum zoom_mode zoom_mode;
+int zoom_eq(Zoom a, Zoom b);
+double get_zoom(Zoom z);
+Zoom make_zoom(double s);
+Zoom zoom_in(Zoom z);
+Zoom zoom_out(Zoom z);
+Zoom calculate_fit(GdkPixbuf *image, int xfit, int yfit, double cap);
+Zoom calculate_zoom_mode(GdkPixbuf *image, enum zoom_mode mode);
+
+/* gbild.c */
+int expose_image(GtkWidget *widget, GdkEventExpose *event, void *user);
+void add_images(struct file *new_files, size_t nnew_files);
+void set_images_from_array(struct file *selected_files, size_t nselected_files);
+void set_images_from_list(GSList *selected_files);
+void scroll_by(double horizontally, double vertically);
+void set_zoom_around_point(Zoom new_zoom, double x, double y);
+void set_zoom_around_centre(Zoom new_zoom);
+void set_zoom_and_recentre(Zoom new_zoom);
+void reload_redraw(void);
+void transform_redraw(enum transformation augment);
+void navigate_redraw(void);
+int recalculate_zoom_mode(void *user);