* in a drawable. Doing this generically will permit user defined drawing
* behavior in a later time.
*
- * We keep each data type in a hash table, as this container suits the
- * best the information we receive (GQuark).
- * (A hash table for facilities, pointing to an array per facility, containing
- * event_number events.)
- * (hash tables for cpus, for process state, for execution mode and submode).
+ * This file provides an API which is meant to be reusable for all viewers that
+ * need to show information in line, icon, text, background or point form in
+ * a drawable area having time for x axis. The y axis, in the control flow
+ * viewer case, is corresponding to the different processes, but it can be
+ * reused integrally for cpu, and eventually locks, buffers, network
+ * interfaces... What will differ between the viewers is the precise
+ * information which interests us. We may think that the most useful
+ * information for control flow are some specific events, like schedule
+ * change, and processes'states. It may differ for a cpu viewer : the
+ * interesting information could be more the execution mode of each cpu.
+ * This API in meant to make viewer's writers life easier : it will become
+ * a simple choice of icons and line types for the precise information
+ * the viewer has to provide (agremented with keeping supplementary records
+ * and modifying slightly the DrawContext to suit the needs.)
+ *
+ * We keep each data type in attributes, keys to specific information
+ * being formed from the GQuark corresponding to the information received.
+ * (facilities / facility_name / events / eventname.)
+ * (cpus/cpu_name, process_states/ps_name,
+ * execution_modes/em_name, execution_submodes/es_name).
* The goal is then to provide a generic way to print information on the
* screen for all this different information.
*
* GQuark.) The habitual place for xpm icons is in
* ${prefix}/share/LinuxTraceToolkit.) + position (over or under line)
* - line (color, width, style)
- * - point (color, size)
+ * - Arc (big points) (color, size)
* - background color (color)
*
+ * An item is a leaf of the attributes tree. It is, in that case, including
+ * all kind of events categories we can have. It then associates each category
+ * with one or more actions (drawing something) or nothing.
+ *
* Each item has an array of hooks (hook list). Each hook represents an
* operation to perform. We seek the array each time we want to
- * draw an item. We execute each operation in order.
+ * draw an item. We execute each operation in order. An operation type
+ * is associated with each hook to permit user listing and modification
+ * of these operations. The operation type is also used to find the
+ * corresponding priority for the sorting. Operation type and priorities
+ * are enum and a static int table.
*
* The array has to be sorted by priority each time we add a task in it.
- * A priority is associated with each hook. It permits
+ * A priority is associated with each operation type. It permits
* to perform background color selection before line or text drawing. We also
* draw lines before text, so the text appears over the lines.
*
* text being easy to replace with icons. The DrawContext is passed as
* call_data for the operation hooks.
*
+ * We use the lttv global attributes to keep track of the loaded icons.
+ * If we need an icon, we look for it in the icons / icon name pathname.
+ * If found, we use the pointer to it. If not, we load the pixmap in
+ * memory and set the pointer to the GdkPixmap in the attributes.
+ *
* Author : Mathieu Desnoyers, October 2003
*/
#include <glib.h>
+#include <gtk/gtk.h>
+#include <gdk/gdk.h>
#include <lttv/hook.h>
+#include <lttv/attribute.h>
+#include <lttv/iattribute.h>
+
+#include <lttv/processTrace.h>
+#include <lttv/state.h>
+
+#include "Draw_Item.h"
+
+/* The DrawContext keeps information about the current drawing position and
+ * the previous one, so we can use both to draw lines.
+ *
+ * over : position for drawing over the middle line.
+ * middle : middle line position.
+ * under : position for drawing under the middle line.
+ *
+ * the modify_* are used to take into account that we should go forward
+ * when we draw a text, an arc or an icon, while it's unneeded when we
+ * draw a line or background.
+ */
+struct _DrawContext {
+ GdkDrawable *drawable;
+ GdkGC *gc;
+
+ DrawInfo *Current;
+ DrawInfo *Previous;
+};
+
+struct _DrawInfo {
+ ItemInfo *over;
+ ItemInfo *middle;
+ ItemInfo *under;
+
+ ItemInfo *modify_over;
+ ItemInfo *modify_middle;
+ ItemInfo *modify_under;
+};
+
+/* LttvExecutionState is accessible through the LttvTracefileState. Is has
+ * a pointer to the LttvProcessState which points to the top of stack
+ * execution state : LttvExecutionState *state.
+ *
+ * LttvExecutionState contains (useful here):
+ * LttvExecutionMode t,
+ * LttvExecutionSubmode n,
+ * LttvProcessStatus s
+ *
+ *
+ * LttvTraceState will be used in the case we need the string of the
+ * different processes, eventtype_names, syscall_names, trap_names, irq_names.
+ *
+ * LttvTracefileState also gives the cpu_name and, as it herits from
+ * LttvTracefileContext, it gives the LttEvent structure, which is needed
+ * to get facility name and event name.
+ */
+struct _ItemInfo {
+ gint x, y;
+ LttvTraceState *ts;
+ LttvTracefileState *tfs;
+};
+
+
+/*
+ * The Item element is only used so the DrawOperation is modifiable by users.
+ * During drawing, only the Hook is needed.
+ */
+struct _DrawOperation {
+ DrawableItems Item;
+ LttvHooks *Hook;
+};
+
+/*
+ * We define here each items that can be drawn, together with their
+ * associated priority. Many item types can have the same priority,
+ * it's only used for quicksorting the operations when we add a new one
+ * to the array of operations to perform. Lower priorities are executed
+ * first. So, for example, we may want to give background color a value
+ * of 10 while a line would have 20, so the background color, which
+ * is in fact a rectangle, does not hide the line.
+ */
+
+static int Items_Priorities[] = {
+ 50, /* ITEM_TEXT */
+ 40, /* ITEM_ICON */
+ 20, /* ITEM_LINE */
+ 30, /* ITEM_POINT */
+ 10 /* ITEM_BACKGROUND */
+};
+
+/*
+ * Here are the different structures describing each item type that can be
+ * drawn. They contain the information necessary to draw the item : not the
+ * position (this is provided by the DrawContext), but the text, icon name,
+ * line width, color; all the properties of the specific items.
+ */
+
+struct _PropertiesText {
+ GdkColor *foreground;
+ GdkColor *background;
+ gint size;
+ gchar *Text;
+ RelPos position;
+};
+
+
+struct _PropertiesIcon {
+ gchar *icon_name;
+ gint width;
+ gint height;
+ RelPos position;
+};
+
+struct _PropertiesLine {
+ GdkColor *color;
+ gint line_width;
+ GdkLineStyle style;
+ RelPos position;
+};
+
+struct _PropertiesArc {
+ GdkColor *color;
+ gint size; /* We force circle by width = height */
+ gboolean filled;
+ RelPos position;
+};
+
+struct _PropertiesBG {
+ GdkColor *color;
+};
+
+
+/* Drawing hook functions */
+gboolean draw_text( void *hook_data, void *call_data)
+{
+ PropertiesText *Properties = (PropertiesText*)hook_data;
+ DrawContext *Draw_Context = (DrawContext*)call_data;
+
+ PangoContext *context;
+ PangoLayout *layout;
+ PangoFontDescription *FontDesc;// = pango_font_description_new();
+ gint Font_Size;
+ PangoRectangle ink_rect;
+
+ gdk_gc_set_foreground(Draw_Context->gc, Properties->foreground);
+ gdk_gc_set_background(Draw_Context->gc, Properties->background);
+
+ layout = gtk_widget_create_pango_layout(GTK_WIDGET(Draw_Context->drawable), NULL);
+ context = pango_layout_get_context(layout);
+ FontDesc = pango_context_get_font_description(context);
+ Font_Size = pango_font_description_get_size(FontDesc);
+ pango_font_description_set_size(FontDesc, Properties->size*PANGO_SCALE);
+
+
+ pango_layout_set_text(layout, Properties->Text, -1);
+ pango_layout_get_pixel_extents(layout, &ink_rect, NULL);
+ switch(Properties->position) {
+ case OVER:
+ gdk_draw_layout(Draw_Context->drawable, Draw_Context->gc,
+ Draw_Context->Current->modify_over->x,
+ Draw_Context->Current->modify_over->y,
+ layout);
+ Draw_Context->Current->modify_over->x += ink_rect.width;
+
+ break;
+ case MIDDLE:
+ gdk_draw_layout(Draw_Context->drawable, Draw_Context->gc,
+ Draw_Context->Current->modify_middle->x,
+ Draw_Context->Current->modify_middle->y,
+ layout);
+ Draw_Context->Current->modify_middle->x += ink_rect.width;
+ break;
+ case UNDER:
+ gdk_draw_layout(Draw_Context->drawable, Draw_Context->gc,
+ Draw_Context->Current->modify_under->x,
+ Draw_Context->Current->modify_under->y,
+ layout);
+ Draw_Context->Current->modify_under->x += ink_rect.width;
+ break;
+ }
+
+
+ pango_font_description_set_size(FontDesc, Font_Size);
+ g_free(layout);
+
+ return 0;
+}
+
+gboolean draw_icon( void *hook_data, void *call_data)
+{
+ PropertiesIcon *Properties = (PropertiesIcon*)hook_data;
+ DrawContext *Draw_Context = (DrawContext*)call_data;
+
+ GdkBitmap *mask = g_new(GdkBitmap, 1);
+ GdkPixmap *icon_pixmap = g_new(GdkPixmap, 1);
+ GdkGC *gc = gdk_gc_new(Draw_Context->drawable);
+ gdk_gc_copy(gc, Draw_Context->gc);
+
+ icon_pixmap = gdk_pixmap_create_from_xpm(Draw_Context->drawable, &mask, NULL,
+ Properties->icon_name);
+
+ gdk_gc_set_clip_mask(gc, mask);
+
+ switch(Properties->position) {
+ case OVER:
+ gdk_draw_drawable(Draw_Context->drawable,
+ gc,
+ icon_pixmap,
+ 0, 0,
+ Draw_Context->Current->modify_over->x,
+ Draw_Context->Current->modify_over->y,
+ Properties->width, Properties->height);
+
+ Draw_Context->Current->modify_over->x += Properties->width;
+
+ break;
+ case MIDDLE:
+ gdk_draw_drawable(Draw_Context->drawable,
+ gc,
+ icon_pixmap,
+ 0, 0,
+ Draw_Context->Current->modify_middle->x,
+ Draw_Context->Current->modify_middle->y,
+ Properties->width, Properties->height);
+
+
+ Draw_Context->Current->modify_middle->x += Properties->width;
+ break;
+ case UNDER:
+ gdk_draw_drawable(Draw_Context->drawable,
+ gc,
+ icon_pixmap,
+ 0, 0,
+ Draw_Context->Current->modify_under->x,
+ Draw_Context->Current->modify_under->y,
+ Properties->width, Properties->height);
+
+ Draw_Context->Current->modify_under->x += Properties->width;
+ break;
+ }
+
+ g_free(gc);
+
+ return 0;
+}
+
+gboolean draw_line( void *hook_data, void *call_data)
+{
+ PropertiesLine *Properties = (PropertiesLine*)hook_data;
+ DrawContext *Draw_Context = (DrawContext*)call_data;
+
+ gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
+ gdk_gc_set_line_attributes( Draw_Context->gc,
+ Properties->line_width,
+ Properties->style,
+ GDK_CAP_BUTT,
+ GDK_JOIN_MITER);
+
+ switch(Properties->position) {
+ case OVER:
+ drawing_draw_line(
+ NULL, Draw_Context->drawable,
+ Draw_Context->Previous->over->x,
+ Draw_Context->Previous->over->y,
+ Draw_Context->Current->over->x,
+ Draw_Context->Current->over->y,
+ Draw_Context->gc);
+ break;
+ case MIDDLE:
+ drawing_draw_line(
+ NULL, Draw_Context->drawable,
+ Draw_Context->Previous->middle->x,
+ Draw_Context->Previous->middle->y,
+ Draw_Context->Current->middle->x,
+ Draw_Context->Current->middle->y,
+ Draw_Context->gc);
+ break;
+ case UNDER:
+ drawing_draw_line(
+ NULL, Draw_Context->drawable,
+ Draw_Context->Previous->under->x,
+ Draw_Context->Previous->under->y,
+ Draw_Context->Current->under->x,
+ Draw_Context->Current->under->y,
+ Draw_Context->gc);
+
+ break;
+ }
+
+ return 0;
+}
+
+gboolean draw_arc( void *hook_data, void *call_data)
+{
+ PropertiesArc *Properties = (PropertiesArc*)hook_data;
+ DrawContext *Draw_Context = (DrawContext*)call_data;
+
+ gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
+
+ switch(Properties->position) {
+ case OVER:
+ gdk_draw_arc(Draw_Context->drawable, Draw_Context->gc,
+ Properties->filled,
+ Draw_Context->Current->modify_over->x,
+ Draw_Context->Current->modify_over->y,
+ Properties->size, Properties->size, 0, 360*64);
+ Draw_Context->Current->modify_over->x += Properties->size;
+
+ break;
+ case MIDDLE:
+ gdk_draw_arc(Draw_Context->drawable, Draw_Context->gc,
+ Properties->filled,
+ Draw_Context->Current->modify_middle->x,
+ Draw_Context->Current->modify_middle->y,
+ Properties->size, Properties->size, 0, 360*64);
+ Draw_Context->Current->modify_middle->x += Properties->size;
+
+ break;
+ case UNDER:
+ gdk_draw_arc(Draw_Context->drawable, Draw_Context->gc,
+ Properties->filled,
+ Draw_Context->Current->modify_under->x,
+ Draw_Context->Current->modify_under->y,
+ Properties->size, Properties->size, 0, 360*64);
+ Draw_Context->Current->modify_under->x += Properties->size;
+
+ break;
+ }
+
+
+ return 0;
+}
+
+gboolean draw_bg( void *hook_data, void *call_data)
+{
+ PropertiesBG *Properties = (PropertiesBG*)hook_data;
+ DrawContext *Draw_Context = (DrawContext*)call_data;
+
+ gdk_gc_set_foreground(Draw_Context->gc, Properties->color);
+
+
+ gdk_draw_rectangle(Draw_Context->drawable, Draw_Context->gc,
+ TRUE,
+ Draw_Context->Previous->over->x,
+ Draw_Context->Previous->over->y,
+ Draw_Context->Current->over->x - Draw_Context->Previous->over->x,
+ Draw_Context->Previous->under->y);
+
+ return 0;
+}
projects / lttv.git / blobdiff