file names mod part 1

[lttv.git] / ltt / branches / poly / lttv / modules / gui / ControlFlow / drawing.h

diff --git a/ltt/branches/poly/lttv/modules/gui/ControlFlow/drawing.h b/ltt/branches/poly/lttv/modules/gui/ControlFlow/drawing.h
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+++ b/ltt/branches/poly/lttv/modules/gui/ControlFlow/drawing.h
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+#ifndef _DRAWING_H
+#define _DRAWING_H
+
+#include <glib.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <ltt/ltt.h>
+#include "CFV.h"
+#include "Draw_Item.h"
+
+
+#define SAFETY 50 // safety pixels at right and bottom of pixmap buffer
+
+/* This part of the viewer does :
+ * Draw horizontal lines, getting graphic context as arg.
+ * Copy region of the screen into another.
+ * Modify the boundaries to reflect a scale change. (resize)
+ * Refresh the physical screen with the pixmap
+ * A helper function is provided here to convert from time to process
+ * identifier to pixels and the contrary (will be useful for mouse selection).
+ * Insert an empty square in the drawing, moving the bottom part.
+ *
+ * Note: The last point is exactly why it would not be so easy to add the
+ * vertical line functionnality as in the original version of LTT. In order
+ * to do so, we should keep all processes in the list for the duration of
+ * all the trace instead of dynamically adding and removing them when we
+ * scroll. Another possibility is to redraw all the visible area when a new
+ * process is added to the list. The second solution seems more appropriate
+ * to me.
+ * 
+ *
+ * The pixmap used has the width of the physical window, but the height
+ * of the shown processes.
+ */
+
+typedef struct _Drawing_t Drawing_t;
+
+struct _Drawing_t {
+  GtkWidget *drawing_area;
+  GdkPixmap *pixmap;
+  ControlFlowData *control_flow_data;
+  
+  PangoLayout *pango_layout;
+
+  gint    height, width, depth;
+  
+};
+
+Drawing_t *drawing_construct(ControlFlowData *control_flow_data);
+void drawing_destroy(Drawing_t *drawing);
+
+GtkWidget *drawing_get_widget(Drawing_t *drawing);
+  
+//void drawing_Refresh (  Drawing_t *drawing,
+//      guint x, guint y,
+//      guint width, guint height);
+
+void drawing_draw_line( Drawing_t *drawing,
+      GdkPixmap *pixmap,
+      guint x1, guint y1,
+      guint x2, guint y2,
+      GdkGC *GC);
+
+//void drawing_copy( Drawing_t *drawing,
+//    guint xsrc, guint ysrc,
+//    guint xdest, guint ydest,
+//    guint width, guint height);
+
+/* Insert a square corresponding to a new process in the list */
+void drawing_insert_square(Drawing_t *drawing,
+        guint y,
+        guint height);
+
+/* Remove a square corresponding to a removed process in the list */
+void drawing_remove_square(Drawing_t *drawing,
+        guint y,
+        guint height);
+
+
+//void drawing_Resize(Drawing_t *drawing, guint h, guint w);
+
+void convert_pixels_to_time(
+    gint width,
+    guint x,
+    LttTime *window_time_begin,
+    LttTime *window_time_end,
+    LttTime *time);
+
+void convert_time_to_pixels(
+    LttTime window_time_begin,
+    LttTime window_time_end,
+    LttTime time,
+    gint width,
+    guint *x);
+
+#endif // _DRAWING_H