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Diffstat (limited to 'generic/tkbltGrHairs.C')
| -rw-r--r-- | generic/tkbltGrHairs.C | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/generic/tkbltGrHairs.C b/generic/tkbltGrHairs.C new file mode 100644 index 0000000..d7ea3d2 --- /dev/null +++ b/generic/tkbltGrHairs.C @@ -0,0 +1,145 @@ +/* + * 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 "tkbltGraph.h" +#include "tkbltGrHairs.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); + } + } +} |