settings/src/displayStatus.c File Reference

#include <stdio.h>
#include <time.h>
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <glib.h>
#include "setupLog.h"
#include "displayStatus.h"
#include "liberdm/erdm.h"
#include "erbusy.h"

Go to the source code of this file.

Functions
gboolean	display_update_during_idle_handling (gpointer data)
gboolean	display_update_request_screen_refresh (int level, int waveform)
int	display_update_get_level (void)
void	display_update_increase_level (int level)
void	display_update_decrease_level (int level)
Variables
static int	g_currentLevel = LOWEST_LEVEL

---

Function Documentation

void display_update_decrease_level

(

int

level

)

Definition at line 172 of file displayStatus.c.

{
    ST_LOGPRINTF("new level %d - currentlevel %d", level, g_currentLevel);

    if (level < g_currentLevel)
    {
        g_currentLevel = level;
    }
}

gboolean display_update_during_idle_handling

(

gpointer

data

)

callback : called when GTK in idle mode

Parameters:

data

- indicates where the update request came from (DEBUG reasons)

Returns:

0 (to remove the "idle mode" handler)

Definition at line 58 of file displayStatus.c.

{
    int     level = (int) data;
    int     nQuality;
    eDmQuality quality;
    XImage *xi;

    // full screen update,
    gdk_threads_enter();
    xi = XGetImage(GDK_DISPLAY(), GDK_ROOT_WINDOW(), 0, 0, 1, 1, AllPlanes, XYPixmap);
    gdk_flush();
    XDestroyImage(xi);
    gdk_threads_leave();

    erbusy_off();

    // Extract 
    //   level from data
    //   waveform from data

    level = (int) data & 0x0000FFFF;
    nQuality = (int) data >> 16;
    
#if (ST_SCREEN_ON)
    static int counter = 0;
    ST_WARNPRINTF(" **** (%d.%d) ***** [%d]", level, nQuality, counter++);
#endif

    switch (nQuality)
    {
        case WAVEFORM_BW:
            ST_LOGPRINTF("Request for BW waveform");
            quality = dmQBW;
            break;
        case WAVEFORM_TYPING:
            ST_LOGPRINTF("Request for Typing waveform");
            quality = dmQTyping;
            break;
        default:
            quality = dmQFull;
    }

    if ((level == MAIN_WINDOW_EXPOSE_LEVEL) ||
        (level == SETUP_SCREEN_EXPOSE_LEVEL) ||
        (level == ONE_BUTTON_ITEM_CLICKED_LEVEL) || (level == SETUP_PAGE_LAYOUT_CHANGE) || (level == SETTING_ITEM_CHANGE))
    {
        // full screen update => should be done immediately
        dmDisplay(dmCmdPriorUrgent, quality);
    }
    else if ((level == BUTTON_FOCUS_IN_LEVEL) || (level == SELECTION_FOCUS_IN_LEVEL) || (level == TEXT_ENTRY_FOCUS_IN_LEVEL))
    {
        // with Hard key selecting items on the screen 
        dmDisplay(dmCmdPriorNormal, quality);

    }
    else if (level == TEXT_ENTRY_CHANGED_LEVEL)
    {
        //text entry
        dmDisplay(dmCmdPriorUrgent, quality);
    }
    else if (level == SELECTION_CLICKED_LEVEL)
    {
        // switch of a selection item 
        dmDisplay(dmCmdPriorUrgent, quality);
    }
    else
    {
        dmDisplay(dmCmdPriorUrgent, quality);
    }

    //reset the current level
    g_currentLevel = LOWEST_LEVEL;

    // return FALSE to remove handler
    return FALSE;
}

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int display_update_get_level

(

void

)

Definition at line 155 of file displayStatus.c.

{
    return g_currentLevel;
}

void display_update_increase_level

(

int

level

)

Increase the level value of the screen refresh. Meaning that the screen refresh will only be requested to the displayManager for levels equal or larger then this level value.

Parameters:

level

screen refresh level

Returns:

TRUE on success

Definition at line 161 of file displayStatus.c.

{
    ST_LOGPRINTF("increase from %d to %d", g_currentLevel, level);

    if (level > g_currentLevel)
    {
        g_currentLevel = level;
    }
}

gboolean display_update_request_screen_refresh	(	int	level,
		int	waveform
	)

set address of gtk idle callback, where the e-inkt display update is requested

Parameters:

	status	indicates whether or not not used
	data	corresponds to the e-ink waveform (value passed as integer). NULL corresponds to Full Update

Returns:

TRUE on success

Definition at line 136 of file displayStatus.c.

{
    ST_LOGPRINTF("[%d] entry level %d currentlevel %d", counter++, level, g_currentLevel);

    if (level >= g_currentLevel)
    {
        if (waveform != 0)
        {
            ST_LOGPRINTF("Special waveform request");
            level += waveform << 16;
        }

        gtk_idle_add(display_update_during_idle_handling, (gpointer) level);

        g_currentLevel = level + 1;
    }
    return TRUE;
}

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---

Variable Documentation

int g_currentLevel = LOWEST_LEVEL [static]

Definition at line 44 of file displayStatus.c.