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/*
* Smithsonian Astrophysical Observatory, Cambridge, MA, USA
* This code has been modified under the terms listed below and is made
* available under the same terms.
*/
/*
* Copyright 1993-2004 George A Howlett.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <cmath>
#include <tk.h>
#include <tkInt.h>
#include "tkbltGrText.h"
#include "tkbltGraph.h"
#include "tkbltGrPSOutput.h"
using namespace Blt;
TextStyle::TextStyle(Graph* graphPtr)
{
ops_ = (TextStyleOptions*)calloc(1, sizeof(TextStyleOptions));
TextStyleOptions* ops = (TextStyleOptions*)ops_;
graphPtr_ = graphPtr;
manageOptions_ = 1;
ops->anchor =TK_ANCHOR_NW;
ops->color =NULL;
ops->font =NULL;
ops->angle =0;
ops->justify =TK_JUSTIFY_LEFT;
xPad_ = 0;
yPad_ = 0;
gc_ = NULL;
}
TextStyle::TextStyle(Graph* graphPtr, TextStyleOptions* ops)
{
ops_ = (TextStyleOptions*)ops;
graphPtr_ = graphPtr;
manageOptions_ = 0;
xPad_ = 0;
yPad_ = 0;
gc_ = NULL;
}
TextStyle::~TextStyle()
{
// TextStyleOptions* ops = (TextStyleOptions*)ops_;
if (gc_)
Tk_FreeGC(graphPtr_->display_, gc_);
if (manageOptions_)
free(ops_);
}
void TextStyle::drawText(Drawable drawable, const char *text, double x, double y) {
drawText(drawable, text, (int)x, (int)y);
}
void TextStyle::drawText(Drawable drawable, const char *text, int x, int y)
{
drawTextBBox(drawable, text, x, y, NULL, NULL);
}
void TextStyle::drawTextBBox(Drawable drawable, const char *text,
int x, int y, int* ww, int* hh)
{
TextStyleOptions* ops = (TextStyleOptions*)ops_;
if (!text || !(*text))
return;
if (!gc_)
resetStyle();
int w1, h1;
Tk_TextLayout layout = Tk_ComputeTextLayout(ops->font, text, -1, -1,
ops->justify, 0, &w1, &h1);
Point2d rr = rotateText(x, y, w1, h1);
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION >= 6)
TkDrawAngledTextLayout(graphPtr_->display_, drawable, gc_, layout,
(int)rr.x, (int)rr.y, ops->angle, 0, -1);
#else
Tk_DrawTextLayout(graphPtr_->display_, drawable, gc_, layout,
(int)rr.x, (int)rr.y, 0, -1);
#endif
Tk_FreeTextLayout(layout);
if (ww && hh) {
double angle = fmod(ops->angle, 360.0);
if (angle < 0.0)
angle += 360.0;
if (angle != 0.0) {
double rotWidth, rotHeight;
graphPtr_->getBoundingBox(w1, h1, angle, &rotWidth, &rotHeight, NULL);
w1 = (int)rotWidth;
h1 = (int)rotHeight;
}
*ww = w1;
*hh = h1;
}
}
void TextStyle::printText(PSOutput* psPtr, const char *text, int x, int y)
{
TextStyleOptions* ops = (TextStyleOptions*)ops_;
if (!text || !(*text))
return;
int w1, h1;
Tk_TextLayout layout = Tk_ComputeTextLayout(ops->font, text, -1, -1,
ops->justify, 0, &w1, &h1);
int xx =0;
int yy =0;
switch (ops->anchor) {
case TK_ANCHOR_NW: xx = 0; yy = 0; break;
case TK_ANCHOR_N: xx = 1; yy = 0; break;
case TK_ANCHOR_NE: xx = 2; yy = 0; break;
case TK_ANCHOR_E: xx = 2; yy = 1; break;
case TK_ANCHOR_SE: xx = 2; yy = 2; break;
case TK_ANCHOR_S: xx = 1; yy = 2; break;
case TK_ANCHOR_SW: xx = 0; yy = 2; break;
case TK_ANCHOR_W: xx = 0; yy = 1; break;
case TK_ANCHOR_CENTER: xx = 1; yy = 1; break;
}
const char* justify =NULL;
switch (ops->justify) {
case TK_JUSTIFY_LEFT: justify = "0"; break;
case TK_JUSTIFY_CENTER: justify = "0.5"; break;
case TK_JUSTIFY_RIGHT: justify = "1"; break;
}
psPtr->setFont(ops->font);
psPtr->setForeground(ops->color);
psPtr->format("%g %d %d [\n", ops->angle, x, y);
Tcl_ResetResult(graphPtr_->interp_);
Tk_TextLayoutToPostscript(graphPtr_->interp_, layout);
psPtr->append(Tcl_GetStringResult(graphPtr_->interp_));
Tcl_ResetResult(graphPtr_->interp_);
psPtr->format("] %g %g %s DrawText\n", xx/-2.0, yy/-2.0, justify);
}
void TextStyle::printText(PSOutput* psPtr, const char *text, double x, double y) {
return printText(psPtr, text, (int)x, (int)y);
}
void TextStyle::resetStyle()
{
TextStyleOptions* ops = (TextStyleOptions*)ops_;
unsigned long gcMask;
gcMask = GCFont;
XGCValues gcValues;
gcValues.font = Tk_FontId(ops->font);
if (ops->color) {
gcMask |= GCForeground;
gcValues.foreground = ops->color->pixel;
}
GC newGC = Tk_GetGC(graphPtr_->tkwin_, gcMask, &gcValues);
if (gc_)
Tk_FreeGC(graphPtr_->display_, gc_);
gc_ = newGC;
}
Point2d TextStyle::rotateText(int x, int y, int w1, int h1)
{
TextStyleOptions* ops = (TextStyleOptions*)ops_;
// Matrix t0 = Translate(-x,-y);
// Matrix t1 = Translate(-w1/2,-h1/2);
// Matrix rr = Rotate(angle);
// Matrix t2 = Translate(w2/2,h2/2);
// Matrix t3 = Translate(x,y);
double angle = ops->angle;
double ccos = cos(M_PI*angle/180.);
double ssin = sin(M_PI*angle/180.);
double w2, h2;
graphPtr_->getBoundingBox(w1, h1, angle, &w2, &h2, NULL);
double x1 = x+w1/2.;
double y1 = y+h1/2.;
double x2 = w2/2.+x;
double y2 = h2/2.+y;
double rx = x*ccos + y*ssin + (-x1*ccos -y1*ssin +x2);
double ry = -x*ssin + y*ccos + ( x1*ssin -y1*ccos +y2);
return graphPtr_->anchorPoint(rx, ry, w2, h2, ops->anchor);
}
void TextStyle::getExtents(const char *text, int* ww, int* hh)
{
TextStyleOptions* ops = (TextStyleOptions*)ops_;
int w, h;
graphPtr_->getTextExtents(ops->font, text, -1, &w, &h);
*ww = w + 2*xPad_;
*hh = h + 2*yPad_;
}
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