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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 <stdlib.h>
#include "bltGraph.h"
#include "bltGrHairs.h"
#include "tkbltConfig.h"
using namespace Blt;
static Tk_OptionSpec optionSpecs[] = {
{TK_OPTION_COLOR, "-color", "color", "Color",
"green", -1, Tk_Offset(CrosshairsOptions, colorPtr), 0, NULL, 0},
{TK_OPTION_CUSTOM, "-dashes", "dashes", "Dashes",
NULL, -1, Tk_Offset(CrosshairsOptions, dashes),
TK_OPTION_NULL_OK, &dashesObjOption, 0},
{TK_OPTION_PIXELS, "-linewidth", "lineWidth", "Linewidth",
"1", -1, Tk_Offset(CrosshairsOptions, lineWidth), 0, NULL, 0},
{TK_OPTION_PIXELS, "-x", "x", "X",
"0", -1, Tk_Offset(CrosshairsOptions, x), 0, NULL, 0},
{TK_OPTION_PIXELS, "-y", "y", "Y",
"0", -1, Tk_Offset(CrosshairsOptions, y), 0, NULL, 0},
{TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0}
};
Crosshairs::Crosshairs(Graph* graphPtr)
{
ops_ = (CrosshairsOptions*)calloc(1, sizeof(CrosshairsOptions));
graphPtr_ = graphPtr;
visible_ =0;
gc_ =NULL;
optionTable_ = Tk_CreateOptionTable(graphPtr->interp_, optionSpecs);
Tk_InitOptions(graphPtr->interp_, (char*)ops_, optionTable_,
graphPtr->tkwin_);
}
Crosshairs::~Crosshairs()
{
if (gc_)
graphPtr_->freePrivateGC(gc_);
Tk_FreeConfigOptions((char*)ops_, optionTable_, graphPtr_->tkwin_);
free(ops_);
}
// Configure
int Crosshairs::configure()
{
CrosshairsOptions* ops = (CrosshairsOptions*)ops_;
XGCValues gcValues;
gcValues.foreground = ops->colorPtr->pixel;
gcValues.line_width = ops->lineWidth;
unsigned long gcMask = (GCForeground | GCLineWidth);
if (LineIsDashed(ops->dashes)) {
gcValues.line_style = LineOnOffDash;
gcMask |= GCLineStyle;
}
GC newGC = graphPtr_->getPrivateGC(gcMask, &gcValues);
if (LineIsDashed(ops->dashes))
graphPtr_->setDashes(newGC, &ops->dashes);
if (gc_)
graphPtr_->freePrivateGC(gc_);
gc_ = newGC;
// Are the new coordinates on the graph?
map();
return TCL_OK;
}
void Crosshairs::map()
{
CrosshairsOptions* ops = (CrosshairsOptions*)ops_;
segArr_[0].x = ops->x;
segArr_[1].x = ops->x;
segArr_[0].y = graphPtr_->bottom_;
segArr_[1].y = graphPtr_->top_;
segArr_[2].y = ops->y;
segArr_[3].y = ops->y;
segArr_[2].x = graphPtr_->left_;
segArr_[3].x = graphPtr_->right_;
}
void Crosshairs::on()
{
visible_ =1;
}
void Crosshairs::off()
{
visible_ =0;
}
void Crosshairs::draw(Drawable drawable)
{
CrosshairsOptions* ops = (CrosshairsOptions*)ops_;
if (visible_ && Tk_IsMapped(graphPtr_->tkwin_)) {
if (ops->x <= graphPtr_->right_ &&
ops->x >= graphPtr_->left_ &&
ops->y <= graphPtr_->bottom_ &&
ops->y >= graphPtr_->top_) {
XDrawLine(graphPtr_->display_, drawable, gc_,
segArr_[0].x, segArr_[0].y, segArr_[1].x, segArr_[1].y);
XDrawLine(graphPtr_->display_, drawable, gc_,
segArr_[2].x, segArr_[2].y, segArr_[3].x, segArr_[3].y);
}
}
}
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