1 files changed, 96 insertions, 0 deletions
diff --git a/viewer.h b/viewer.h
new file mode 100644
index 0000000..0f81c5b
--- /dev/null
+++ b/viewer.h
@@ -0,0 +1,96 @@
+#include <X11/Intrinsic.h>
+
+#define POINTER_NORMAL    0
+#define POINTER_BUSY      1
+#define POINTER_PICK      2
+#define RUBBER_NEW        3
+#define RUBBER_MOVE       4
+#define RUBBER_X1         5
+#define RUBBER_Y1         6
+#define RUBBER_X2         7
+#define RUBBER_Y2         8
+#define POINTER_COUNT     9
+
+extern Cursor ptrs[];
+
+/* ----------------------------------------------------------------------- */
+
+typedef void (*viewer_pick_cb)(int x, int y, unsigned char *pix,
+			       XtPointer data);
+
+struct ida_viewer {
+    /* x11 stuff */
+    Widget           widget;
+    GC               wgc;
+    XtIntervalId     timer;
+
+    /* image data */
+    struct ida_image img;
+    struct ida_image undo;
+    char             *file;
+
+    /* view data */
+    int              zoom;
+    unsigned int     scrwidth, scrheight;
+    XImage           *ximage;
+    void             *ximage_shm;
+    unsigned char    *rgb_line;
+    unsigned char    *dither_line;
+    unsigned char    *preview_line;
+
+    /* marked rectangle */
+    struct ida_rect  current;
+    int              marked,state;
+    int              last_x,last_y;
+    unsigned long    mask;
+
+    /* pixel picker */
+    viewer_pick_cb   pick_cb;
+    XtPointer        pick_data;
+
+    /* workproc state */
+    XtWorkProcId     wproc;
+    unsigned int     line;
+    unsigned int     steps;
+
+    /* image loader */
+    unsigned int     load_line;
+    void             (*load_read)(unsigned char *dst, unsigned int line,
+				  void *data);
+    void             (*load_done)(void *data);
+    void             *load_data;
+
+    /* image operation */
+    struct ida_image op_src;
+    struct ida_rect  op_rect;
+    unsigned int     op_line;
+    unsigned int     op_preview;
+    void             (*op_work)(struct ida_image *src, struct ida_rect *rect,
+				unsigned char *dst, int line,
+				void *data);
+    void             (*op_done)(void *data);
+    void             *op_data;
+};
+
+/* ----------------------------------------------------------------------- */
+
+Pixmap image_to_pixmap(struct ida_image *img);
+
+/* ----------------------------------------------------------------------- */
+
+struct ida_viewer* viewer_init(Widget widget);
+int viewer_loader_start(struct ida_viewer *ida, struct ida_loader *loader,
+			FILE *fp, char *filename, unsigned int page);
+int viewer_loadimage(struct ida_viewer *ida, char *filename, unsigned int page);
+int viewer_setimage(struct ida_viewer *ida, struct ida_image *img, char *name);
+void viewer_autozoom(struct ida_viewer *ida);
+void viewer_setzoom(struct ida_viewer *ida, int zoom);
+int viewer_i2s(int zoom, int val);
+int viewer_undo(struct ida_viewer *ida);
+int viewer_start_op(struct ida_viewer *ida, struct ida_op *op, void *parm);
+int viewer_start_preview(struct ida_viewer *ida, struct ida_op *op,
+			 void *parm);
+int viewer_cancel_preview(struct ida_viewer *ida);
+
+void viewer_pick(struct ida_viewer *ida, viewer_pick_cb cb, XtPointer data);
+void viewer_unpick(struct ida_viewer *ida);