contentLister/src/displayUpdate.c File Reference

control - application interface with the display manager More...

#include <config.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <liberdm/erdm.h>
#include "contentListerLog.h"
#include "displayUpdate.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	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

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Detailed Description

control - application interface with the display manager

<File description>="">

Definition in file displayUpdate.c.

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Function Documentation

void display_update_decrease_level

(

int

level

)

Decrease 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 143 of file displayUpdate.c.

{
    CL_SCREENPRINTF("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 64 of file displayUpdate.c.

{
    int     level = (int) data;

    CL_SCREENPRINTF("__CONTENTLISTER - request screen update (%d)__", level);

    CL_TIMEDISPLAY("Before gdk_flush()");

    // full screen update,
    gdk_threads_enter();
    gdk_flush();
    gdk_threads_leave();

    erbusy_off();
    
    if (level <= LIST_ITEM_FOCUS_LEVEL)
    {
        CL_TIMEDISPLAY("Before dmDisplay (dmQBW)");
        dmDisplay(dmCmdPriorUrgent, dmQBW);
    }
    else if (level <= TEXTENTRY_CHANGED_LEVEL)
    {
        CL_TIMEDISPLAY("Before dmDisplay (dmQTyping)");
        dmDisplay(dmCmdPriorUrgent, dmQTyping);
    }
    else if (level <= MAIN_WINDOW_EXPOSE_LEVEL)
    {
        CL_TIMEDISPLAY("Before dmDisplay (dmQFull)");
        dmDisplay(dmCmdPriorHigh, dmQFull);
    }
    else
    {
        CL_TIMEDISPLAY("Before dmDisplay (dmQFull, low-priority)");
        dmDisplay(dmCmdPriorLow, dmQFull);
    }

    //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 124 of file displayUpdate.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 131 of file displayUpdate.c.

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

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

gboolean display_update_request_screen_refresh

(

int

level

)

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

Parameters:

status

indicates whether or not not used

Returns:

TRUE on success

Definition at line 108 of file displayUpdate.c.

{
    CL_SCREENPRINTF("entry level %d currentlevel %d", level, g_currentLevel);

    if (level >= g_currentLevel)
    {
        CL_TIMEDISPLAY("Before adding idle callback");

        gtk_idle_add(display_update_during_idle_handling, (gpointer) level);

        g_currentLevel = level + 1;
    }
    CL_SCREENPRINTF("leave level %d currentlevel %d", level, g_currentLevel);
    return TRUE;
}

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Variable Documentation

int g_currentLevel = LOWEST_LEVEL [static]

Definition at line 52 of file displayUpdate.c.