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/*
* Copyright (c) 2002-2006 Samit Basu
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <QtGui>
#include "HandleText.hpp"
#include "HandleAxis.hpp"
#include "HandleProperty.hpp"
#include "HandleList.hpp"
#include <math.h>
#include "IEEEFP.hpp"
HandleText::HandleText() {
ConstructProperties();
SetupDefaults();
}
HandleText::~HandleText() {
}
void HandleText::UpdateState() {
QFont::Style fstyle = QFont::StyleNormal;
QFont::Weight fweight = QFont::Normal;
HPString *fontname = (HPString*) LookupProperty("fontname");
HPFontAngle *fontangle = (HPFontAngle*) LookupProperty("fontangle");
HPFontWeight *fontweight = (HPFontWeight*) LookupProperty("fontweight");
HPScalar *fontsize = (HPScalar*) LookupProperty("fontsize");
if (fontangle->Is("normal"))
fstyle = QFont::StyleNormal;
if (fontangle->Is("italic"))
fstyle = QFont::StyleItalic;
if (fontangle->Is("oblique"))
fstyle = QFont::StyleOblique;
if (fontweight->Is("normal"))
fweight = QFont::Normal;
if (fontweight->Is("bold"))
fweight = QFont::Bold;
if (fontweight->Is("light"))
fweight = QFont::Light;
if (fontweight->Is("demi"))
fweight = QFont::DemiBold;
// Lookup the font
fnt = QFont(fontname->Data(),(int)(fontsize->Data()[0]));
fnt.setStyle(fstyle);
fnt.setWeight(fweight);
HPString *txt = (HPString*) LookupProperty("string");
text = txt->Data();
QFontMetrics fm(fnt);
QRect sze(fm.boundingRect(text));
SetFourVectorDefault("boundingbox",sze.left(),sze.bottom(),
sze.width(),sze.height());
}
int HandleText::GetTextHeightInPixels() {
QFontMetrics fm(fnt);
QRect sze(fm.boundingRect("|"));
return sze.height();
}
void HandleText::PaintMe(RenderEngine& gc) {
UpdateState();
if (StringCheck("visible","off"))
return;
// Get handleaxis parent
HandleAxis* axis = GetParentAxis();
if (!axis) return;
// Map position -> pixel location
int x, y;
QVector<double> pos(VectorPropertyLookup("position"));
// remap it
if (pos.size() == 2) pos << 0;
QVector<double> mapped(axis->ReMap(pos));
gc.toPixels(mapped[0],mapped[1],mapped[2],x,y);
gc.setupDirectDraw();
// Retrieve the margin...
double margin(ScalarPropertyLookup("margin"));
margin = margin + 1;
RenderEngine::AlignmentFlag xalign, yalign;
HPAlignVert *hv = (HPAlignVert*) LookupProperty("verticalalignment");
if (hv->Is("top"))
yalign = RenderEngine::Max;
else if (hv->Is("middle"))
yalign = RenderEngine::Mean;
else
yalign = RenderEngine::Min;
HPAlignHoriz *hh = (HPAlignHoriz*) LookupProperty("horizontalalignment");
if (hh->Is("left"))
xalign = RenderEngine::Min;
else if (hh->Is("center"))
xalign = RenderEngine::Mean;
else
xalign = RenderEngine::Max;
// Get the width and height of the label
int textwidth;
int textheight;
// Get the corner offsets for the label
int textxoffset;
int textyoffset;
gc.measureText(text,fnt,xalign,yalign,textwidth,textheight,textxoffset,textyoffset);
// Construct the coordinates of the text rectangle
int x1, y1;
double costheta, sintheta;
double rotation = ScalarPropertyLookup("rotation");
costheta = cos(-rotation*M_PI/180.0);
sintheta = sin(-rotation*M_PI/180.0);
x1 = (int)(x + (textxoffset-margin)*costheta + (textyoffset-margin)*sintheta);
y1 = (int)(y - (textxoffset-margin)*sintheta + (textyoffset-margin)*costheta);
double hdelx, hdely, vdelx, vdely;
hdelx = (textwidth+2*margin)*costheta;
hdely = -(textwidth+2*margin)*sintheta;
vdelx = (textheight+2*margin)*sintheta;
vdely = (textheight+2*margin)*costheta;
// fill background rectangle
HPColor *bc = (HPColor*) LookupProperty("backgroundcolor");
if (!bc->IsNone()) {
gc.color(bc->Data());
gc.quad(x1,y1,0,
x1+hdelx,y1+hdely,0,
x1+hdelx+vdelx,y1+hdely+vdely,0,
x1+vdelx,y1+vdely,0);
}
// draw bounding rectangle
HPColor *ec = (HPColor*) LookupProperty("edgecolor");
if (!ec->IsNone()) {
gc.color(ec->Data());
gc.setLineStyle(((HPLineStyle*) LookupProperty("linestyle"))->Data());
gc.lineWidth(ScalarPropertyLookup("linewidth"));
// draw bounding rectangle
gc.quadline(x1,y1,0,
x1+hdelx,y1+hdely,0,
x1+hdelx+vdelx,y1+hdely+vdely,0,
x1+vdelx,y1+vdely,0);
}
// draw the text
HPColor *tc = (HPColor*) LookupProperty("color");
gc.putText(x,y,text,tc->Data(),xalign,yalign,fnt,rotation);
gc.releaseDirectDraw();
}
void HandleText::SetupDefaults() {
SetConstrainedStringDefault("horizontalalignment","left");
SetThreeVectorDefault("position",0,0,0);
SetScalarDefault("rotation",0);
SetConstrainedStringDefault("units","data");
SetConstrainedStringDefault("verticalalignment","middle");
SetThreeVectorDefault("backgroundcolor",-1,-1,-1);
SetThreeVectorDefault("edgecolor",-1,-1,-1);
SetScalarDefault("linewidth",0.5);
SetConstrainedStringDefault("linestyle","-");
SetScalarDefault("margin",0);
SetConstrainedStringDefault("fontangle","normal");
SetStringDefault("fontname","helvetica");
SetScalarDefault("fontsize",10);
SetConstrainedStringDefault("fontunits","points");
SetConstrainedStringDefault("fontweight","normal");
SetConstrainedStringDefault("visible","on");
SetThreeVectorDefault("color",0,0,0);
SetStringDefault("type","text");
}
void HandleText::ConstructProperties() {
//!
//@Module TEXTPROPERTIES Text Object Properties
//@@Section HANDLE
//@@Usage
//Below is a summary of the properties for a text object.
//\begin{itemize}
// \item @|boundingbox| - @|four vector| - The size of the bounding
// box containing the text (in pixels). May contain negative values
// if the text is slanted.
// \item @|children| - Not used.
// \item @|string| - @|string| - The text contained in the label.
// \item @|extent| - Not used.
// \item @|horizontalalignment| - @|{'left','center','right'}| - Controls the
// alignment of the text relative to the specified position point.
// \item @|position| - @|three vector| - The position of the label in axis
// coordinates.
// \item @|rotation| - @|scalar| - The rotation angle (in degrees) of the label.
// \item @|units| - Not used.
// \item @|verticalalignment| - @|{'top','bottom','middle'}| - Controls the
// alignment fo the text relative to the specified position point in the
// vertical position.
// \item @|backgroundcolor| - @|colorspec| - The color used to fill in the background
// rectangle for the label. Normally this is @|none|.
// \item @|edgecolor| - @|colorspec| - The color used to draw the bounding rectangle
// for the label. Normally this is @|none|.
// \item @|linewidth| - @|scalar| - The width of the line used to draw the border.
// \item @|linestyle| - @|{'-','--',':','-.','none'}| - The style of the line used
// to draw the border.
// \item @|margin| - @|scalar| - The amount of spacing to place around the text as
// padding when drawing the rectangle.
// \item @|fontangle| - @|{'normal','italic','oblique'}| - The angle of the fonts used
// for the labels.
// \item @|fontsize| - @|scalar| - The size of fonts used for the text.
// \item @|fontunits| - Not used.
// \item @|fontweight| - @|{'normal','bold','light','demi'}| - The weight of the font used
// for the label
// \item @|visible| - @|{'on','off'}| - Controls visibility of the the line.
// \item @|color| - @|colorspec| - The color of the text of the label.
// \item @|children| - Not used.
// \item @|parent| - The handle of the axis that owns this label.
// \item @|tag| - @|string| - A string that can be used to tag the object.
// \item @|type| - @|string| - Returns the string @|'text'|.
// \item @|userdata| - @|array| - Available to store any variable you
// want in the handle object.
//\end{itemize}
//!
AddProperty(new HPFourVector,"boundingbox");
AddProperty(new HPHandles,"children");
AddProperty(new HPString,"string");
AddProperty(new HPFourVector,"extent");
AddProperty(new HPAlignHoriz,"horizontalalignment");
AddProperty(new HPThreeVector,"position");
AddProperty(new HPScalar,"rotation");
AddProperty(new HPUnits,"units");
AddProperty(new HPAlignVert,"verticalalignment");
AddProperty(new HPColor,"backgroundcolor");
AddProperty(new HPColor,"edgecolor");
AddProperty(new HPScalar,"linewidth");
AddProperty(new HPLineStyle,"linestyle");
AddProperty(new HPScalar,"margin");
AddProperty(new HPFontAngle,"fontangle");
AddProperty(new HPString,"fontname");
AddProperty(new HPScalar,"fontsize");
AddProperty(new HPFontUnits,"fontunits");
AddProperty(new HPFontWeight,"fontweight");
AddProperty(new HPOnOff,"visible");
AddProperty(new HPColor,"color");
AddProperty(new HPHandles,"children");
AddProperty(new HPHandles,"parent");
AddProperty(new HPString,"tag");
AddProperty(new HPString,"type");
AddProperty(new HPArray,"userdata");
}
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