warzone2100/lib/widget/label.c

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/*
This file is part of Warzone 2100.
Copyright (C) 1999-2004 Eidos Interactive
Copyright (C) 2005-2007 Warzone Resurrection Project
Warzone 2100 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Warzone 2100 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Warzone 2100; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/** @file
* Functions for the label widget.
*/
#include "lib/framework/frame.h"
#include "widget.h"
#include "widgint.h"
#include "label.h"
#include "form.h"
#include "tip.h"
// FIXME Direct iVis implementation include!
#include "lib/ivis_common/rendmode.h"
#include "lib/ivis_common/textdraw.h"
/* Create a button widget data structure */
W_LABEL* labelCreate(const W_LABINIT* psInit)
{
W_LABEL* psWidget;
/* Do some validation on the initialisation struct */
if (psInit->style & ~(WLAB_PLAIN | WLAB_ALIGNLEFT |
WLAB_ALIGNRIGHT | WLAB_ALIGNCENTRE | WIDG_HIDDEN))
{
ASSERT( false, "Unknown button style" );
return NULL;
}
/* Allocate the required memory */
psWidget = (W_LABEL *)malloc(sizeof(W_LABEL));
if (psWidget == NULL)
{
debug(LOG_ERROR, "labelCreate: Out of memory");
abort();
return NULL;
}
/* Allocate the memory for the tip and copy it if necessary */
psWidget->pTip = psInit->pTip;
/* Initialise the structure */
psWidget->type = WIDG_LABEL;
psWidget->id = psInit->id;
psWidget->formID = psInit->formID;
psWidget->style = psInit->style;
psWidget->x = psInit->x;
psWidget->y = psInit->y;
psWidget->width = psInit->width;
psWidget->height = psInit->height;
if (psInit->pDisplay)
{
psWidget->display = psInit->pDisplay;
}
else
{
psWidget->display = labelDisplay;
}
psWidget->callback = psInit->pCallback;
psWidget->pUserData = psInit->pUserData;
psWidget->UserData = psInit->UserData;
psWidget->FontID = psInit->FontID;
if (psInit->pText)
{
sstrcpy(psWidget->aText, psInit->pText);
}
else
{
psWidget->aText[0] = 0;
}
return psWidget;
}
/* Free the memory used by a button */
void labelFree(W_LABEL *psWidget)
{
ASSERT( psWidget != NULL,
"labelFree: Invalid label pointer" );
free(psWidget);
}
/* label display function */
void labelDisplay(WIDGET *psWidget, UDWORD xOffset, UDWORD yOffset, PIELIGHT *pColours)
{
SDWORD fx,fy, fw;
W_LABEL *psLabel;
enum iV_fonts FontID;
psLabel = (W_LABEL *)psWidget;
FontID = psLabel->FontID;
iV_SetFont(FontID);
iV_SetTextColour(pColours[WCOL_TEXT]);
if (psLabel->style & WLAB_ALIGNCENTRE)
{
fw = iV_GetTextWidth(psLabel->aText);
fx = xOffset + psLabel->x + (psLabel->width - fw) / 2;
}
else if (psLabel->style & WLAB_ALIGNRIGHT)
{
fw = iV_GetTextWidth(psLabel->aText);
fx = xOffset + psLabel->x + psLabel->width - fw;
}
else
{
fx = xOffset + psLabel->x;
}
fy = yOffset + psLabel->y + (psLabel->height - iV_GetTextLineSize())/2 - iV_GetTextAboveBase();
iV_DrawText(psLabel->aText,fx,fy);
}
/* Respond to a mouse moving over a label */
void labelHiLite(W_LABEL *psWidget, W_CONTEXT *psContext)
{
psWidget->state |= WLABEL_HILITE;
/* If there is a tip string start the tool tip */
if (psWidget->pTip)
{
tipStart((WIDGET *)psWidget, psWidget->pTip, psContext->psScreen->TipFontID,
psContext->psForm->aColours,
psWidget->x + psContext->xOffset, psWidget->y + psContext->yOffset,
psWidget->width,psWidget->height);
}
}
/* Respond to the mouse moving off a label */
void labelHiLiteLost(W_LABEL *psWidget)
{
psWidget->state &= ~(WLABEL_HILITE);
if (psWidget->pTip)
{
tipStop((WIDGET *)psWidget);
}
}