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- fixed a bug that made the scroller knob jump backwards when dragged (this

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bug had no relation with the behavior that #define STRICT_NEXT_BEHAVIOUR
  attempts to accomplish).
This commit is contained in:
dan
2001-04-29 03:24:17 +00:00
parent 3bde6495a3
commit 0616167b0f
2 changed files with 88 additions and 94 deletions
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3
WINGs/ChangeLog
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@@ -48,6 +48,9 @@ Changes since wmaker 0.64.0:
- replaced some still left malloc's with wmalloc's.
- fixed a bug in WMReparentWidget()
- added WMReparentWidget() to WINGs.h
- fixed a bug that made the scroller knob jump backwards when dragged (this
bug had no relation with the behavior that #define STRICT_NEXT_BEHAVIOUR
attempts to accomplish).
changes since wmaker 0.63.1:

179
WINGs/wscroller.c
View File

@@ -69,6 +69,8 @@ typedef struct W_Scroller {
#define DEFAULT_ARROWS_POSITION WSAMinEnd
#define BUTTON_SIZE ((SCROLLER_WIDTH) - 4)
static void destroyScroller(Scroller *sPtr);
static void paintScroller(Scroller *sPtr);
@@ -241,20 +243,17 @@ paintArrow(WMScroller *sPtr, Drawable d, int part)
{
WMView *view = sPtr->view;
WMScreen *scr = view->screen;
int ofs, bsize;
int ofs;
W_Pixmap *arrow;
#ifndef DOUBLE_BUFFER
GC gc = scr->lightGC;
#endif
bsize = SCROLLER_WIDTH - 4;
if (part == 0) { /* decrement button */
if (sPtr->flags.horizontal) {
if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
ofs = view->size.width - 2*(bsize+1) - 1;
ofs = view->size.width - 2*(BUTTON_SIZE+1) - 1;
} else {
ofs = 2;
}
@@ -265,7 +264,7 @@ paintArrow(WMScroller *sPtr, Drawable d, int part)
} else {
if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
ofs = view->size.height - 2*(bsize+1) - 1;
ofs = view->size.height - 2*(BUTTON_SIZE+1) - 1;
} else {
ofs = 2;
}
@@ -282,9 +281,9 @@ paintArrow(WMScroller *sPtr, Drawable d, int part)
} else { /* increment button */
if (sPtr->flags.horizontal) {
if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
ofs = view->size.width - bsize+1 - 3;
ofs = view->size.width - BUTTON_SIZE+1 - 3;
} else {
ofs = 2 + bsize+1;
ofs = 2 + BUTTON_SIZE+1;
}
if (sPtr->flags.incrDown)
arrow = scr->hiRightArrow;
@@ -292,9 +291,9 @@ paintArrow(WMScroller *sPtr, Drawable d, int part)
arrow = scr->rightArrow;
} else {
if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
ofs = view->size.height - bsize+1 - 3;
ofs = view->size.height - BUTTON_SIZE+1 - 3;
} else {
ofs = 2 + bsize+1;
ofs = 2 + BUTTON_SIZE+1;
}
if (sPtr->flags.incrDown)
arrow = scr->hiDownArrow;
@@ -314,48 +313,48 @@ paintArrow(WMScroller *sPtr, Drawable d, int part)
/* paint button */
#ifndef DOUBLE_BUFFER
XFillRectangle(scr->display, d, gc,
ofs+1, 2+1, bsize+1-3, bsize-3);
ofs+1, 2+1, BUTTON_SIZE+1-3, BUTTON_SIZE-3);
#else
if ((!part&&sPtr->flags.decrDown) || (part&&sPtr->flags.incrDown))
XFillRectangle(scr->display, d, WMColorGC(scr->white),
ofs+1, 2+1, bsize+1-3, bsize-3);
ofs+1, 2+1, BUTTON_SIZE+1-3, BUTTON_SIZE-3);
#endif /* DOUBLE_BUFFER */
W_DrawRelief(scr, d, ofs, 2, bsize, bsize, WRRaised);
W_DrawRelief(scr, d, ofs, 2, BUTTON_SIZE, BUTTON_SIZE, WRRaised);
/* paint arrow */
XSetClipMask(scr->display, scr->clipGC, arrow->mask);
XSetClipOrigin(scr->display, scr->clipGC,
ofs + (bsize - arrow->width) / 2,
2 + (bsize - arrow->height) / 2);
ofs + (BUTTON_SIZE - arrow->width) / 2,
2 + (BUTTON_SIZE - arrow->height) / 2);
XCopyArea(scr->display, arrow->pixmap, d, scr->clipGC,
0, 0, arrow->width, arrow->height,
ofs + (bsize - arrow->width) / 2,
2 + (bsize - arrow->height) / 2);
ofs + (BUTTON_SIZE - arrow->width) / 2,
2 + (BUTTON_SIZE - arrow->height) / 2);
} else { /* vertical */
/* paint button */
#ifndef DOUBLE_BUFFER
XFillRectangle(scr->display, d, gc,
2+1, ofs+1, bsize-3, bsize+1-3);
2+1, ofs+1, BUTTON_SIZE-3, BUTTON_SIZE+1-3);
#else
if ((!part&&sPtr->flags.decrDown) || (part&&sPtr->flags.incrDown))
XFillRectangle(scr->display, d, WMColorGC(scr->white),
2+1, ofs+1, bsize-3, bsize+1-3);
2+1, ofs+1, BUTTON_SIZE-3, BUTTON_SIZE+1-3);
#endif /* DOUBLE_BUFFER */
W_DrawRelief(scr, d, 2, ofs, bsize, bsize, WRRaised);
W_DrawRelief(scr, d, 2, ofs, BUTTON_SIZE, BUTTON_SIZE, WRRaised);
/* paint arrow */
XSetClipMask(scr->display, scr->clipGC, arrow->mask);
XSetClipOrigin(scr->display, scr->clipGC,
2 + (bsize - arrow->width) / 2,
ofs + (bsize - arrow->height) / 2);
2 + (BUTTON_SIZE - arrow->width) / 2,
ofs + (BUTTON_SIZE - arrow->height) / 2);
XCopyArea(scr->display, arrow->pixmap, d, scr->clipGC,
0, 0, arrow->width, arrow->height,
2 + (bsize - arrow->width) / 2,
ofs + (bsize - arrow->height) / 2);
2 + (BUTTON_SIZE - arrow->width) / 2,
ofs + (BUTTON_SIZE - arrow->height) / 2);
}
}
@@ -371,16 +370,14 @@ knobLength(Scroller *sPtr)
else
length = sPtr->view->size.height - 4;
if (sPtr->flags.arrowsPosition == WSAMaxEnd) {
length -= (SCROLLER_WIDTH - 4 + 1)*2;
} else if (sPtr->flags.arrowsPosition == WSAMinEnd) {
length -= (SCROLLER_WIDTH - 4 + 1)*2;
if (sPtr->flags.arrowsPosition != WSANone) {
length -= 2*(BUTTON_SIZE+1);
}
tmp = (int)((float)length * sPtr->knobProportion + 0.5);
/* keep minimum size */
if (tmp < SCROLLER_WIDTH-4)
tmp = SCROLLER_WIDTH-4;
if (tmp < BUTTON_SIZE)
tmp = BUTTON_SIZE;
return tmp;
}
@@ -423,71 +420,69 @@ paintScroller(Scroller *sPtr)
XFillRectangle(scr->display, d, scr->stippleGC, 2, 2,
view->size.width-4, view->size.height-4);
} else {
ofs = 2;
if (sPtr->flags.arrowsPosition==WSAMaxEnd) {
ofs = 0;
length -= (SCROLLER_WIDTH - 4 + 1)*2;
length -= (BUTTON_SIZE+1)*2;
} else if (sPtr->flags.arrowsPosition==WSAMinEnd) {
ofs = (SCROLLER_WIDTH - 4 + 1)*2;
length -= (SCROLLER_WIDTH - 4 + 1)*2;
} else {
ofs = 0;
ofs += (BUTTON_SIZE+1)*2;
length -= (BUTTON_SIZE+1)*2;
}
knobL = (float)knobLength(sPtr);
knobP = sPtr->floatValue * ((float)length - knobL);
if (sPtr->flags.horizontal) {
/* before */
XFillRectangle(scr->display, d, scr->stippleGC,
ofs+2, 2, (int)knobP, view->size.height-4);
ofs, 2, (int)knobP, view->size.height-4);
/* knob */
#ifndef DOUBLE_BUFFER
XFillRectangle(scr->display, d, scr->lightGC,
ofs+2+(int)knobP+2, 2+2, (int)knobL-4,
ofs+(int)knobP+2, 2+2, (int)knobL-4,
view->size.height-4-4);
#endif
W_DrawRelief(scr, d, ofs+2+(int)knobP, 2, (int)knobL,
W_DrawRelief(scr, d, ofs+(int)knobP, 2, (int)knobL,
view->size.height-4, WRRaised);
XCopyArea(scr->display, scr->scrollerDimple->pixmap, d,
scr->copyGC, 0, 0,
scr->scrollerDimple->width, scr->scrollerDimple->height,
ofs+2+(int)knobP+((int)knobL-scr->scrollerDimple->width-1)/2,
ofs+(int)knobP+((int)knobL-scr->scrollerDimple->width-1)/2,
(view->size.height-scr->scrollerDimple->height-1)/2);
/* after */
if ((int)(knobP+knobL) < length)
XFillRectangle(scr->display, d, scr->stippleGC,
ofs+2+(int)(knobP+knobL), 2,
ofs+(int)(knobP+knobL), 2,
length-(int)(knobP+knobL),
view->size.height-4);
} else {
/* before */
if (knobP>0.0)
XFillRectangle(scr->display, d, scr->stippleGC,
2, ofs+2, view->size.width-4, (int)knobP);
2, ofs, view->size.width-4, (int)knobP);
/* knob */
#ifndef DOUBLE_BUFFER
XFillRectangle(scr->display, d, scr->lightGC,
2+2, ofs+2+(int)knobP+2,
2+2, ofs+(int)knobP+2,
view->size.width-4-4, (int)knobL-4);
#endif
XCopyArea(scr->display, scr->scrollerDimple->pixmap, d,
scr->copyGC, 0, 0,
scr->scrollerDimple->width, scr->scrollerDimple->height,
(view->size.width-scr->scrollerDimple->width-1)/2,
ofs+2+(int)knobP+((int)knobL-scr->scrollerDimple->height-1)/2);
ofs+(int)knobP+((int)knobL-scr->scrollerDimple->height-1)/2);
W_DrawRelief(scr, d, 2, ofs+2+(int)knobP,
W_DrawRelief(scr, d, 2, ofs+(int)knobP,
view->size.width-4, (int)knobL, WRRaised);
/* after */
if ((int)(knobP+knobL) < length)
XFillRectangle(scr->display, d, scr->stippleGC,
2, ofs+2+(int)(knobP+knobL),
2, ofs+(int)(knobP+knobL),
view->size.width-4,
length-(int)(knobP+knobL));
}
@@ -652,21 +647,23 @@ handlePush(Scroller *sPtr, int pushX, int pushY, int alternate)
sPtr->dragPoint = pushY;
{
int noButtons = (sPtr->flags.arrowsPosition == WSANone);
int length, knobP;
int buttonsLen;
if (sPtr->flags.arrowsPosition != WSANone)
buttonsLen = 2*(BUTTON_SIZE+1);
else
buttonsLen = 0;
if (sPtr->flags.horizontal)
length = sPtr->view->size.width - 4;
length = sPtr->view->size.width - 4 - buttonsLen;
else
length = sPtr->view->size.height - 4;
if (!noButtons)
length -= 36;
length = sPtr->view->size.height - 4 - buttonsLen;
knobP = (int)(sPtr->floatValue * (float)(length-knobLength(sPtr)));
if (sPtr->flags.arrowsPosition == WSAMinEnd)
sPtr->dragPoint -= 2 + (noButtons ? 0 : 36) + knobP;
sPtr->dragPoint -= 2 + buttonsLen + knobP;
else
sPtr->dragPoint -= 2 + knobP;
}
@@ -691,21 +688,36 @@ handlePush(Scroller *sPtr, int pushX, int pushY, int alternate)
static float
floatValueForPoint(int slotOfs, int slotLength, int knobLength, int point)
floatValueForPoint(Scroller *sPtr, int point)
{
float floatValue = 0;
float position;
int slotOfs, slotLength, knobL;
if (sPtr->flags.horizontal)
slotLength = sPtr->view->size.width - 4;
else
slotLength = sPtr->view->size.height - 4;
slotOfs = 2;
if (sPtr->flags.arrowsPosition==WSAMaxEnd) {
slotLength -= (BUTTON_SIZE+1)*2;
} else if (sPtr->flags.arrowsPosition==WSAMinEnd) {
slotOfs += (BUTTON_SIZE+1)*2;
slotLength -= (BUTTON_SIZE+1)*2;
}
knobL = (float)knobLength(sPtr);
#ifdef STRICT_NEXT_BEHAVIOUR
if (point < slotOfs + knobLength/2)
position = (float)(slotOfs + knobLength/2);
else if (point > slotOfs + slotLength - knobLength/2)
position = (float)(slotOfs + slotLength - knobLength/2);
if (point < slotOfs + knobL/2)
position = (float)(slotOfs + knobL/2);
else if (point > slotOfs + slotLength - knobL/2)
position = (float)(slotOfs + slotLength - knobL/2);
else
position = (float)point;
floatValue = (position-(float)(slotOfs+slotLength/2))
/(float)(slotLength-knobLength);
/(float)(slotLength-knobL);
#else
/* Adjust the last point to lie inside the knob slot */
if (point < slotOfs)
@@ -716,7 +728,7 @@ floatValueForPoint(int slotOfs, int slotLength, int knobLength, int point)
position = (float)point;
/* Compute the float value */
floatValue = (position-(float)slotOfs) / (float)(slotLength-knobLength);
floatValue = (position-(float)slotOfs) / (float)(slotLength-knobL);
#endif
assert(!isnan(floatValue));
@@ -727,43 +739,22 @@ floatValueForPoint(int slotOfs, int slotLength, int knobLength, int point)
static void
handleMotion(Scroller *sPtr, int mouseX, int mouseY)
{
int slotOffset;
int slotLength;
int noButtons = (sPtr->flags.arrowsPosition == WSANone);
if (sPtr->flags.arrowsPosition == WSAMinEnd)
slotOffset = 2 + (noButtons ? 0 : 36);
else
slotOffset = 2;
if (sPtr->flags.draggingKnob) {
float newFloatValue;
#ifdef STRICT_NEXT_BEHAVIOUR
float newFloatValue;
int point;
if (sPtr->flags.horizontal) {
slotLength = sPtr->view->size.width-4-(noButtons ? 0 : 36);
newFloatValue = floatValueForPoint(slotOffset, slotLength,
(int)(slotLength*sPtr->knobProportion),
mouseX);
point = mouseX;
} else {
slotLength = sPtr->view->size.height-4-(noButtons ? 0 : 36);
newFloatValue = floatValueForPoint(slotOffset, slotLength,
(int)(slotLength*sPtr->knobProportion),
mouseY);
point = mouseY;
}
#else
if (sPtr->flags.horizontal) {
slotLength = sPtr->view->size.width-4-(noButtons ? 0 : 36);
newFloatValue = floatValueForPoint(slotOffset, slotLength,
(int)(slotLength*sPtr->knobProportion),
mouseX-sPtr->dragPoint);
} else {
slotLength = sPtr->view->size.height-4-(noButtons ? 0 : 36);
newFloatValue = floatValueForPoint(slotOffset, slotLength,
(int)(slotLength*sPtr->knobProportion),
mouseY-sPtr->dragPoint);
}
#endif /* !STRICT_NEXT_BEHAVIOUR */
WMSetScrollerParameters(sPtr, newFloatValue, sPtr->knobProportion);
#ifndef STRICT_NEXT_BEHAVIOUR
point -= sPtr->dragPoint;
#endif
newFloatValue = floatValueForPoint(sPtr, point);
WMSetScrollerParameters(sPtr, newFloatValue, sPtr->knobProportion);
if (sPtr->action) {
(*sPtr->action)(sPtr, sPtr->clientData);
WMPostNotificationName(WMScrollerDidScrollNotification, sPtr,