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libsysprof-ui: add some helpers to zoom manager

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This should be able to help us cleanup some duplicated code in various
places so that we keep our timings associated amongst different visualizing
widgets.
This commit is contained in:
Christian Hergert
2019-05-14 13:07:09 -07:00
parent b19ce4b741
commit 0f0bdee4ac
2 changed files with 30 additions and 15 deletions
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39
src/libsysprof-ui/sysprof-zoom-manager.c
View File

@ -27,6 +27,9 @@
#include "sysprof-zoom-manager.h" #include "sysprof-zoom-manager.h"
#define DEFAULT_PIXELS_PER_SEC (20.0)
#define NSEC_PER_SEC G_GINT64_CONSTANT(1000000000)
struct _SysprofZoomManager struct _SysprofZoomManager
{ {
GObject parent_instance; GObject parent_instance;
@ -56,21 +59,9 @@ G_DEFINE_TYPE_EXTENDED (SysprofZoomManager, sysprof_zoom_manager, G_TYPE_OBJECT,
static GParamSpec *properties [N_PROPS]; static GParamSpec *properties [N_PROPS];
static gdouble zoom_levels[] = { static gdouble zoom_levels[] = {
0.3, 0.3, 0.5, 0.67, 0.80, 0.90,
0.5, 1.0, 1.5, 2.0, 2.5, 3.0,
0.67, 5.0, 10.0, 20.0, 30.0, 50.0,
0.80,
0.90,
1.0,
1.5,
2.0,
2.5,
3.0,
5.0,
10.0,
20.0,
30.0,
50.0,
}; };
static void static void
@ -506,3 +497,21 @@ sysprof_zoom_manager_get_zoom_label (SysprofZoomManager *self)
else else
return g_strdup_printf ("%d%%", (gint)percent); return g_strdup_printf ("%d%%", (gint)percent);
} }
gint64
sysprof_zoom_manager_get_duration_for_width (SysprofZoomManager *self,
gint width)
{
g_return_val_if_fail (SYSPROF_IS_ZOOM_MANAGER (self), 0);
return NSEC_PER_SEC * ((gdouble)width / (DEFAULT_PIXELS_PER_SEC * self->zoom));
}
gint
sysprof_zoom_manager_get_width_for_duration (SysprofZoomManager *self,
gint64 duration)
{
g_return_val_if_fail (SYSPROF_IS_ZOOM_MANAGER (self), 0);
return (gdouble)duration / (gdouble)NSEC_PER_SEC * DEFAULT_PIXELS_PER_SEC * self->zoom;
}

6
src/libsysprof-ui/sysprof-zoom-manager.h
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@ -64,5 +64,11 @@ void sysprof_zoom_manager_set_zoom (SysprofZoomManager *s
gdouble zoom); gdouble zoom);
SYSPROF_AVAILABLE_IN_ALL SYSPROF_AVAILABLE_IN_ALL
gchar *sysprof_zoom_manager_get_zoom_label (SysprofZoomManager *self); gchar *sysprof_zoom_manager_get_zoom_label (SysprofZoomManager *self);
SYSPROF_AVAILABLE_IN_ALL
gint sysprof_zoom_manager_get_width_for_duration (SysprofZoomManager *self,
gint64 duration);
SYSPROF_AVAILABLE_IN_ALL
gint64 sysprof_zoom_manager_get_duration_for_width (SysprofZoomManager *self,
gint width);
G_END_DECLS G_END_DECLS