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EXAMPLES
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SQUARES
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GLUE.C
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1980-01-05
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196 lines
/*
* Copyright (c) 1987, 1988, 1989 Stanford University
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Stanford not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Stanford makes no representations about
* the suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* STANFORD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
* IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Special glue for demonstration purposes.
* Unlike normal glue, we display the glue shape and actual size
* when a button is clicked.
*/
#include <InterViews/interactor.h>
#include <InterViews/sensor.h>
#include <InterViews/shape.h>
#include <InterViews/painter.h>
#include <stdio.h>
class Glue : public Interactor {
protected:
Glue();
Glue(const char*);
Glue(Painter* bg);
virtual void Redraw(Coord, Coord, Coord, Coord);
private:
void Init();
};
class HGlue : public Glue {
public:
HGlue(int natural = 0, int stretch = hfil);
HGlue(const char*, int natural = 0, int stretch = hfil);
HGlue(int natural, int shrink, int stretch);
HGlue(const char*, int natural, int shrink, int stretch);
HGlue(Painter* bg, int natural = 0, int stretch = hfil);
HGlue(Painter* bg, int natural, int shrink, int stretch);
virtual void Handle(Event&);
private:
void Init(int nat, int shrink, int stretch);
};
class VGlue : public Glue {
public:
VGlue(int natural = 0, int stretch = vfil);
VGlue(const char*, int natural = 0, int stretch = vfil);
VGlue(int natural, int shrink, int stretch);
VGlue(const char*, int natural, int shrink, int stretch);
VGlue(Painter* bg, int natural = 0, int stretch = vfil);
VGlue(Painter* bg, int natural, int shrink, int stretch);
virtual void Handle(Event&);
private:
void Init(int nat, int shrink, int stretch);
};
Glue::Glue () {
Init();
}
Glue::Glue (const char* name) {
SetInstance(name);
Init();
}
Glue::Glue (Painter* bg) : (nil, bg) {
Init();
}
void Glue::Init () {
SetClassName("Glue");
input = updownEvents;
input->Reference();
}
void Glue::Redraw (Coord x1, Coord y1, Coord x2, Coord y2) {
output->ClearRect(canvas, x1, y1, x2, y2);
}
HGlue::HGlue (int nat, int str) {
Init(nat, nat, str);
}
HGlue::HGlue (const char* name, int nat, int str) : (name) {
Init(nat, nat, str);
}
HGlue::HGlue (int nat, int shr, int str) {
Init(nat, shr, str);
}
HGlue::HGlue (const char* name, int nat, int shr, int str) : (name) {
Init(nat, shr, str);
}
HGlue::HGlue (Painter* bg, int nat, int str) : (bg) {
Init(nat, nat, str);
}
HGlue::HGlue (Painter* bg, int nat, int shr, int str) : (bg) {
Init(nat, shr, str);
}
void HGlue::Init (int nat, int shr, int str) {
SetClassName("HGlue");
shape->width = nat;
shape->height = 0;
shape->Rigid(shr, str, vfil, vfil);
}
VGlue::VGlue (int nat, int str) {
Init(nat, nat, str);
}
VGlue::VGlue (const char* name, int nat, int str) : (name) {
Init(nat, nat, str);
}
VGlue::VGlue (int nat, int shr, int str) {
Init(nat, shr, str);
}
VGlue::VGlue (const char* name, int nat, int shr, int str) : (name) {
Init(nat, shr, str);
}
VGlue::VGlue (Painter* bg, int nat, int str) : (bg) {
Init(nat, nat, str);
}
VGlue::VGlue (Painter* bg, int nat, int shr, int str) : (bg) {
Init(nat, shr, str);
}
void VGlue::Init (int nat, int shr, int str) {
SetClassName("VGlue");
shape->width = 0;
shape->height = nat;
shape->Rigid(hfil, hfil, shr, str);
}
/*
* Differences from standard glue -- handle events differently.
*/
void HGlue::Handle (Event& e) {
if (e.eventType == DownEvent) {
char buf[100];
sprintf(
buf, "HGlue[%d], natural (%d,%d,%d)",
xmax+1, shape->width, shape->hstretch, shape->hshrink
);
output->SetColors(output->GetBgColor(), output->GetFgColor());
output->ClearRect(canvas, 0, 0, xmax, ymax);
output->Text(canvas, buf, 0, 0);
output->SetColors(output->GetBgColor(), output->GetFgColor());
} else if (e.eventType == UpEvent) {
Draw();
}
}
void VGlue::Handle (Event& e) {
if (e.eventType == DownEvent) {
char buf[100];
sprintf(
buf, "VGlue[%d], natural (%d,%d,%d)",
ymax+1, shape->height, shape->vstretch, shape->vshrink
);
output->SetColors(output->GetBgColor(), output->GetFgColor());
output->ClearRect(canvas, 0, 0, xmax, ymax);
output->Text(canvas, buf, 0, 0);
output->SetColors(output->GetBgColor(), output->GetFgColor());
} else if (e.eventType == UpEvent) {
Draw();
}
}