#ifndef _DRAWING_H
#define _DRAWING_H
-#include <time.h>
#include <glib.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <ltt/ltt.h>
+#include "CFV.h"
+#include "Draw_Item.h"
-typedef time_t ltt_time;
-
-typedef struct _ltt_time_interval
-{
- ltt_time time_begin, time_end;
-} ltt_time_interval;
+#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;
-Drawing_t *Drawing(void);
-void Drawing_destroy(Drawing_t *Drawing);
-void Drawing_Resize(Drawing_t *Drawing, guint h, guint w);
+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 get_time_from_pixels(
- guint area_x,
- guint area_width,
- guint window_width,
- ltt_time *window_time_begin,
- ltt_time *window_time_end,
- ltt_time *time_begin,
- ltt_time *time_end);
+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