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fvwm1/fvwm/resize.c
Thomas Adam 6ce28fab50 Initial import
2019-08-26 23:33:33 +01:00

663 lines
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/****************************************************************************
* This module is based on Twm, but has been siginificantly modified
* by Rob Nation
****************************************************************************/
/*****************************************************************************/
/** Copyright 1988 by Evans & Sutherland Computer Corporation, **/
/** Salt Lake City, Utah **/
/** Portions Copyright 1989 by the Massachusetts Institute of Technology **/
/** Cambridge, Massachusetts **/
/** **/
/** All Rights Reserved **/
/** **/
/** Permission to use, copy, modify, and distribute this software and **/
/** its documentation for any purpose and without fee is hereby **/
/** granted, provided that the above copyright notice appear in all **/
/** copies and that both that copyright notice and this permis- **/
/** sion notice appear in supporting documentation, and that the **/
/** names of Evans & Sutherland and M.I.T. not be used in advertising **/
/** in publicity pertaining to distribution of the software without **/
/** specific, written prior permission. **/
/** **/
/** EVANS & SUTHERLAND AND M.I.T. DISCLAIM ALL WARRANTIES WITH REGARD **/
/** TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT- **/
/** ABILITY AND FITNESS, IN NO EVENT SHALL EVANS & SUTHERLAND OR **/
/** M.I.T. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAM- **/
/** AGES 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. **/
/*****************************************************************************/
/***********************************************************************
*
* window resizing borrowed from the "wm" window manager
*
***********************************************************************/
#include "../configure.h"
#include <stdio.h>
#include "fvwm.h"
#include "misc.h"
#include "screen.h"
#include "parse.h"
static int dragx; /* all these variables are used */
static int dragy; /* in resize operations */
static int dragWidth;
static int dragHeight;
static int origx;
static int origy;
static int origWidth;
static int origHeight;
static int ymotion, xmotion;
static int last_width,last_height;
extern int menuFromFrameOrWindowOrTitlebar;
extern Window PressedW;
/****************************************************************************
*
* Starts a window resize operation
*
****************************************************************************/
void resize_window(Window w,FvwmWindow *tmp_win, int val1, int val2, int val1_unit, int val2_unit)
{
Bool finished = FALSE, done = FALSE;
int x,y,delta_x,delta_y;
Window ResizeWindow;
extern int Stashed_X, Stashed_Y;
Bool flags;
#ifndef NO_PAGER
extern Bool pagerOn;
#endif
if((w == None)||(tmp_win == NULL))
return;
/* Already checked this in functions.c, but its here too incase
* there's a resize on initial placement. */
if(check_allowed_function2(F_RESIZE,tmp_win) == 0)
{
XBell(dpy, Scr.screen);
return;
}
/* can't resize icons */
if(tmp_win->flags & ICONIFIED)
return;
ResizeWindow = tmp_win->frame;
if((val1 != 0)&&(val2 != 0))
{
int width,height;
dragWidth = val1*val1_unit/100;
dragHeight = val2*val2_unit/100;
ConstrainSize (tmp_win, &dragWidth, &dragHeight);
SetupFrame (tmp_win, tmp_win->frame_x,
tmp_win->frame_y ,dragWidth, dragHeight,FALSE);
ResizeWindow = None;
#ifndef NO_PAGER
RedrawPager();
#endif
return;
}
InstallRootColormap();
if (menuFromFrameOrWindowOrTitlebar)
{
/* warp the pointer to the cursor position from before menu appeared*/
XWarpPointer(dpy, None, Scr.Root, 0, 0, 0, 0, Stashed_X,Stashed_Y);
XFlush(dpy);
}
if(!GrabEm(MOVE))
{
XBell(dpy,Scr.screen);
return;
}
if((!(Scr.flags & OpaqueResize))||
((Scr.flags & OpaqueResize)&&(!(tmp_win->flags & MAPPED))))
XGrabServer(dpy);
/* handle problems with edge-wrapping while resizing */
flags = Scr.flags;
Scr.flags &= ~(EdgeWrapX|EdgeWrapY);
#ifndef NO_PAGER
pagerOn = False;
#endif
XGetGeometry(dpy, (Drawable) ResizeWindow, &JunkRoot,
&dragx, &dragy, (unsigned int *)&dragWidth,
(unsigned int *)&dragHeight, &JunkBW,&JunkDepth);
dragx += tmp_win->bw;
dragy += tmp_win->bw;
origx = dragx;
origy = dragy;
origWidth = dragWidth;
origHeight = dragHeight;
ymotion=xmotion=0;
/* pop up a resize dimensions window */
XMapRaised(dpy, Scr.SizeWindow);
last_width = 0;
last_height = 0;
DisplaySize(tmp_win, origWidth, origHeight,True);
/* Get the current position to determine which border to resize */
if((PressedW != Scr.Root)&&(PressedW != None))
{
if(PressedW == tmp_win->sides[0]) /* top */
ymotion = 1;
if(PressedW == tmp_win->sides[1]) /* right */
xmotion = -1;
if(PressedW == tmp_win->sides[2]) /* bottom */
ymotion = -1;
if(PressedW == tmp_win->sides[3]) /* left */
xmotion = 1;
if(PressedW == tmp_win->corners[0]) /* upper-left */
{
ymotion = 1;
xmotion = 1;
}
if(PressedW == tmp_win->corners[1]) /* upper-right */
{
xmotion = -1;
ymotion = 1;
}
if(PressedW == tmp_win->corners[2]) /* lower right */
{
ymotion = -1;
xmotion = 1;
}
if(PressedW == tmp_win->corners[3]) /* lower left */
{
ymotion = -1;
xmotion = -1;
}
}
/* draw the rubber-band window */
if((!(Scr.flags & OpaqueResize))||
((Scr.flags & OpaqueResize)&&(!(tmp_win->flags & MAPPED))))
MoveOutline (Scr.Root, dragx - tmp_win->bw, dragy - tmp_win->bw, dragWidth + 2 * tmp_win->bw,
dragHeight + 2 * tmp_win->bw);
/* loop to resize */
while(!finished)
{
XMaskEvent(dpy, ButtonPressMask | ButtonReleaseMask | KeyPressMask |
ButtonMotionMask | PointerMotionMask | ExposureMask, &Event);
StashEventTime(&Event);
if (Event.type == MotionNotify)
/* discard any extra motion events before a release */
while(XCheckMaskEvent(dpy, ButtonMotionMask | ButtonReleaseMask |
PointerMotionMask,&Event))
{
StashEventTime(&Event);
if (Event.type == ButtonRelease) break;
}
done = FALSE;
/* Handle a limited number of key press events to allow mouseless
* operation */
if(Event.type == KeyPress)
Keyboard_shortcuts(&Event,ButtonRelease);
switch(Event.type)
{
case ButtonPress:
XAllowEvents(dpy,ReplayPointer,CurrentTime);
case KeyPress:
done = TRUE;
break;
case ButtonRelease:
finished = TRUE;
done = TRUE;
break;
case MotionNotify:
x = Event.xmotion.x_root;
y = Event.xmotion.y_root;
/* need to move the viewport */
HandlePaging(Scr.EdgeScrollX,Scr.EdgeScrollY,&x,&y,
&delta_x,&delta_y,False);
origx -= delta_x;
origy -= delta_y;
dragx -= delta_x;
dragy -= delta_y;
DoResize(x, y, tmp_win);
done = TRUE;
default:
break;
}
if(!done)
{
if((!(Scr.flags & OpaqueResize))||
((Scr.flags & OpaqueResize)&&(!(tmp_win->flags & MAPPED))))
MoveOutline(Scr.Root,0,0,0,0);
DispatchEvent();
if((!(Scr.flags & OpaqueResize))||
((Scr.flags & OpaqueResize)&&(!(tmp_win->flags & MAPPED))))
MoveOutline(Scr.Root, dragx - tmp_win->bw, dragy - tmp_win->bw,
dragWidth + 2 * tmp_win->bw, dragHeight + 2 * tmp_win->bw);
}
}
/* erase the rubber-band */
if((!(Scr.flags & OpaqueResize))||
((Scr.flags & OpaqueResize)&&(!(tmp_win->flags & MAPPED))))
MoveOutline(Scr.Root, 0, 0, 0, 0);
/* pop down the size window */
XUnmapWindow(dpy, Scr.SizeWindow);
#ifndef NO_PAGER
pagerOn = True;
#endif
ConstrainSize (tmp_win, &dragWidth, &dragHeight);
SetupFrame (tmp_win, dragx - tmp_win->bw,
dragy - tmp_win->bw, dragWidth, dragHeight,FALSE);
UninstallRootColormap();
ResizeWindow = None;
XUngrabServer(dpy);
UngrabEm();
#ifndef NO_PAGER
RedrawPager();
#endif
Scr.flags |= flags & (EdgeWrapX|EdgeWrapY);
return;
}
/***********************************************************************
*
* Procedure:
* DoResize - move the rubberband around. This is called for
* each motion event when we are resizing
*
* Inputs:
* x_root - the X corrdinate in the root window
* y_root - the Y corrdinate in the root window
* tmp_win - the current fvwm window
*
************************************************************************/
void DoResize(int x_root, int y_root, FvwmWindow *tmp_win)
{
int action=0;
#ifndef NO_PAGER
unsigned int width,height;
int ww,wh;
int wx,wy;
int MaxH,MaxW;
static int last_w = -10000, last_h = -10000;
#endif
if ((y_root <= origy)||((ymotion == 1)&&(y_root < origy+origHeight-1)))
{
dragy = y_root;
dragHeight = origy + origHeight - y_root;
action = 1;
ymotion = 1;
}
else if ((y_root >= origy + origHeight - 1)||
((ymotion == -1)&&(y_root > origy)))
{
dragy = origy;
dragHeight = 1 + y_root - dragy;
action = 1;
ymotion = -1;
}
if ((x_root <= origx)||
((xmotion == 1)&&(x_root < origx + origWidth - 1)))
{
dragx = x_root;
dragWidth = origx + origWidth - x_root;
action = 1;
xmotion = 1;
}
if ((x_root >= origx + origWidth - 1)||
((xmotion == -1)&&(x_root > origx)))
{
dragx = origx;
dragWidth = 1 + x_root - origx;
action = 1;
xmotion = -1;
}
if (action)
{
ConstrainSize (tmp_win, &dragWidth, &dragHeight);
if (xmotion == 1)
dragx = origx + origWidth - dragWidth;
if (ymotion == 1)
dragy = origy + origHeight - dragHeight;
#ifndef NO_PAGER
/* update size of the pager_view window */
if((Scr.FvwmPager != NULL)&&
(dragx < Scr.FvwmPager->frame_x + Scr.FvwmPager->frame_width)&&
(dragx+dragWidth > Scr.FvwmPager->frame_x)&&
(dragy < Scr.FvwmPager->frame_y + Scr.FvwmPager->frame_height)&&
(dragy+dragHeight > Scr.FvwmPager->frame_y)&&
((!(Scr.flags & OpaqueResize))||
((Scr.flags & OpaqueResize)&&(!(tmp_win->flags & MAPPED)))))
MoveOutline(Scr.Root,0,0,0,0);
if(Scr.FvwmPager)
{
width = Scr.FvwmPager->frame_width - 2*Scr.FvwmPager->boundary_width;
height = Scr.FvwmPager->frame_height - Scr.FvwmPager->title_height
- 2*Scr.FvwmPager->boundary_width;
MaxW = Scr.VxMax + Scr.MyDisplayWidth;
MaxH = Scr.VyMax + Scr.MyDisplayHeight;
if(!(tmp_win->flags & STICKY)&&
(!(tmp_win->flags & ICONIFIED)||(!(Scr.flags & SuppressIcons)))&&
(!(tmp_win->flags & ICONIFIED)||(!(Scr.flags & StickyIcons))))
{
/* show the actual window */
wx = (dragx + Scr.Vx)*(int)width/MaxW;
wy = (dragy + Scr.Vy)*(int)height/MaxH;
ww = dragWidth*(int)width/MaxW;
wh = dragHeight*(int)height/MaxH;
if((last_w - ww >= 2)||(last_w - ww <= -2)||
(last_h - wh >= 2)||(last_h - wh <= -2))
{
if(ww<2)ww=2;
if(wh<2)wh=2;
XMoveResizeWindow(dpy, tmp_win->pager_view, wx, wy, ww, wh);
last_h = wh;
last_w = ww;
}
}
}
#endif
if((!(Scr.flags & OpaqueResize))||
((Scr.flags & OpaqueResize)&&(!(tmp_win->flags & MAPPED))))
{
MoveOutline(Scr.Root, dragx - tmp_win->bw,dragy - tmp_win->bw,
dragWidth + 2 * tmp_win->bw, dragHeight + 2 * tmp_win->bw);
}
else
{
SetupFrame (tmp_win, dragx - tmp_win->bw,
dragy - tmp_win->bw, dragWidth, dragHeight,FALSE);
}
}
DisplaySize(tmp_win, dragWidth, dragHeight,False);
}
/***********************************************************************
*
* Procedure:
* DisplaySize - display the size in the dimensions window
*
* Inputs:
* tmp_win - the current fvwm window
* width - the width of the rubber band
* height - the height of the rubber band
*
***********************************************************************/
void DisplaySize(FvwmWindow *tmp_win, int width, int height,Bool Init)
{
char str[100];
int dwidth,dheight,offset;
if (last_width == width && last_height == height)
return;
last_width = width;
last_height = height;
dheight = height - tmp_win->title_height - 2*tmp_win->boundary_width;
dwidth = width - 2*tmp_win->boundary_width;
dwidth -= tmp_win->hints.base_width;
dheight -= tmp_win->hints.base_height;
dwidth /= tmp_win->hints.width_inc;
dheight /= tmp_win->hints.height_inc;
(void) sprintf (str, " %4d x %-4d ", dwidth, dheight);
offset = (Scr.SizeStringWidth + SIZE_HINDENT*2
- XTextWidth(Scr.StdFont.font,str,strlen(str)))/2;
if(Init)
{
XClearWindow(dpy,Scr.SizeWindow);
if(Scr.d_depth >= 2)
RelieveWindow(tmp_win,
Scr.SizeWindow,0,0,Scr.SizeStringWidth+ SIZE_HINDENT*2,
Scr.StdFont.height + SIZE_VINDENT*2,
Scr.StdReliefGC,Scr.StdShadowGC,FULL_HILITE);
}
else
{
XClearArea(dpy,Scr.SizeWindow,SIZE_HINDENT,SIZE_VINDENT,Scr.SizeStringWidth,
Scr.StdFont.height,False);
}
XDrawString (dpy, Scr.SizeWindow, Scr.NormalGC,
offset, Scr.StdFont.font->ascent + SIZE_VINDENT, str, 13);
}
/***********************************************************************
*
* Procedure:
* ConstrainSize - adjust the given width and height to account for the
* constraints imposed by size hints
*
* The general algorithm, especially the aspect ratio stuff, is
* borrowed from uwm's CheckConsistency routine.
*
***********************************************************************/
void ConstrainSize (FvwmWindow *tmp_win, int *widthp, int *heightp)
{
#define makemult(a,b) ((b==1) ? (a) : (((int)((a)/(b))) * (b)) )
#define _min(a,b) (((a) < (b)) ? (a) : (b))
int minWidth, minHeight, maxWidth, maxHeight, xinc, yinc, delta;
int baseWidth, baseHeight;
int dwidth = *widthp, dheight = *heightp;
dwidth -= 2 *tmp_win->boundary_width;
dheight -= (tmp_win->title_height + 2*tmp_win->boundary_width);
minWidth = tmp_win->hints.min_width;
minHeight = tmp_win->hints.min_height;
baseWidth = tmp_win->hints.base_width;
baseHeight = tmp_win->hints.base_height;
maxWidth = tmp_win->hints.max_width;
maxHeight = tmp_win->hints.max_height;
/* maxWidth = Scr.VxMax + Scr.MyDisplayWidth;
maxHeight = Scr.VyMax + Scr.MyDisplayHeight;*/
xinc = tmp_win->hints.width_inc;
yinc = tmp_win->hints.height_inc;
/*
* First, clamp to min and max values
*/
if (dwidth < minWidth) dwidth = minWidth;
if (dheight < minHeight) dheight = minHeight;
if (dwidth > maxWidth) dwidth = maxWidth;
if (dheight > maxHeight) dheight = maxHeight;
/*
* Second, fit to base + N * inc
*/
dwidth = ((dwidth - baseWidth) / xinc * xinc) + baseWidth;
dheight = ((dheight - baseHeight) / yinc * yinc) + baseHeight;
/*
* Third, adjust for aspect ratio
*/
#define maxAspectX tmp_win->hints.max_aspect.x
#define maxAspectY tmp_win->hints.max_aspect.y
#define minAspectX tmp_win->hints.min_aspect.x
#define minAspectY tmp_win->hints.min_aspect.y
/*
* The math looks like this:
*
* minAspectX dwidth maxAspectX
* ---------- <= ------- <= ----------
* minAspectY dheight maxAspectY
*
* If that is multiplied out, then the width and height are
* invalid in the following situations:
*
* minAspectX * dheight > minAspectY * dwidth
* maxAspectX * dheight < maxAspectY * dwidth
*
*/
if (tmp_win->hints.flags & PAspect)
{
if (minAspectX * dheight > minAspectY * dwidth)
{
delta = makemult(minAspectX * dheight / minAspectY - dwidth,
xinc);
if (dwidth + delta <= maxWidth)
dwidth += delta;
else
{
delta = makemult(dheight - dwidth*minAspectY/minAspectX,
yinc);
if (dheight - delta >= minHeight) dheight -= delta;
}
}
if (maxAspectX * dheight < maxAspectY * dwidth)
{
delta = makemult(dwidth * maxAspectY / maxAspectX - dheight,
yinc);
if (dheight + delta <= maxHeight)
dheight += delta;
else
{
delta = makemult(dwidth - maxAspectX*dheight/maxAspectY,
xinc);
if (dwidth - delta >= minWidth) dwidth -= delta;
}
}
}
/*
* Fourth, account for border width and title height
*/
*widthp = dwidth + 2*tmp_win->boundary_width;
*heightp = dheight + tmp_win->title_height + 2*tmp_win->boundary_width;
return;
}
/***********************************************************************
*
* Procedure:
* MoveOutline - move a window outline
*
* Inputs:
* root - the window we are outlining
* x - upper left x coordinate
* y - upper left y coordinate
* width - the width of the rectangle
* height - the height of the rectangle
*
***********************************************************************/
void MoveOutline(Window root, int x, int y, int width, int height)
{
static int lastx = 0;
static int lasty = 0;
static int lastWidth = 0;
static int lastHeight = 0;
XRectangle rects[5];
if (x == lastx && y == lasty && width == lastWidth && height == lastHeight)
return;
/* undraw the old one, if any */
if (lastWidth || lastHeight)
{
rects[0].x = lastx;
rects[0].y = lasty;
rects[0].width = lastWidth;
rects[0].height = lastHeight;
rects[1].x = lastx+1;
rects[1].y = lasty+1;
rects[1].width = lastWidth-2;
rects[1].height = lastHeight-2;
rects[2].x = lastx+2;
rects[2].y = lasty+2;
rects[2].width = lastWidth-4;
rects[2].height = lastHeight-4;
rects[3].x = lastx+3;
rects[3].y = lasty+3 + (lastHeight-6)/3;
rects[3].width = lastWidth-6;
rects[3].height = (lastHeight-6)/3;
rects[4].x = lastx+3 + (lastWidth-6)/3;
rects[4].y = lasty+3;
rects[4].width = (lastWidth-6)/3;
rects[4].height = (lastHeight-6);
XDrawRectangles(dpy,Scr.Root,Scr.DrawGC,rects,5);
}
lastx = x;
lasty = y;
lastWidth = width;
lastHeight = height;
/* draw the new one, if any */
if (lastWidth || lastHeight)
{
rects[0].x = lastx;
rects[0].y = lasty;
rects[0].width = lastWidth;
rects[0].height = lastHeight;
rects[1].x = lastx+1;
rects[1].y = lasty+1;
rects[1].width = lastWidth-2;
rects[1].height = lastHeight-2;
rects[2].x = lastx+2;
rects[2].y = lasty+2;
rects[2].width = lastWidth-4;
rects[2].height = lastHeight-4;
rects[3].x = lastx+3;
rects[3].y = lasty+3 + (lastHeight-6)/3;
rects[3].width = lastWidth-6;
rects[3].height = (lastHeight-6)/3;
rects[4].x = lastx+3 + (lastWidth-6)/3;
rects[4].y = lasty+3;
rects[4].width = (lastWidth-6)/3;
rects[4].height = (lastHeight-6);
XDrawRectangles(dpy,Scr.Root,Scr.DrawGC,rects,5);
}
}
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