Reworked the thumb drawing code, thumb calculation code, channel

calculation code, and corrected some bugs in how tics are drawn and
how clicks are handled.
This commit is contained in:
Aric Stewart 2000-05-25 23:02:18 +00:00 committed by Alexandre Julliard
parent c616625945
commit f64a59f2fe

View file

@ -7,7 +7,6 @@
*
* TODO:
* - Some messages.
* - more display code.
* - handle dragging slider better
* - better tic handling.
* - more notifications.
@ -19,7 +18,6 @@
-TBM_SETRANGEMAX & TBM_SETRANGEMIN should only change the view of the
trackbar, not the actual amount of tics in the list.
-TBM_GETTIC & TBM_GETTICPOS shouldn't rely on infoPtr->tics being sorted.
- Make drawing code exact match of w95 drawing.
*/
@ -115,47 +113,43 @@ static VOID
TRACKBAR_CalcChannel (HWND hwnd, TRACKBAR_INFO *infoPtr)
{
DWORD dwStyle = GetWindowLongA (hwnd, GWL_STYLE);
INT cyChannel;
INT cyChannel,offsettop,offsetedge;
RECT lpRect,*channel = & infoPtr->rcChannel;
GetClientRect (hwnd, &lpRect);
if (dwStyle & TBS_ENABLESELRANGE)
cyChannel = max(infoPtr->uThumbLen - 8, 4);
cyChannel = ((int)(infoPtr->uThumbLen/4.5)+1)*3;
else
cyChannel = 4;
if (dwStyle & TBS_VERT) {
channel->top = lpRect.top + 8;
channel->bottom = lpRect.bottom - 8;
offsettop = (int)(infoPtr->uThumbLen/4.5);
offsetedge = (int)(infoPtr->uThumbLen/4.5) + 3;
if (dwStyle & TBS_BOTH) {
channel->left = (lpRect.right - cyChannel) / 2;
channel->right = (lpRect.right + cyChannel) / 2;
}
else if (dwStyle & TBS_LEFT) {
channel->left = lpRect.left + 10;
if (dwStyle & TBS_VERT) {
channel->top = lpRect.top + offsetedge;
channel->bottom = lpRect.bottom - offsetedge;
if (dwStyle & (TBS_BOTH | TBS_LEFT)) {
channel->left = lpRect.left + offsettop + 8 ;
channel->right = channel->left + cyChannel;
}
else { /* TBS_RIGHT */
channel->right = lpRect.right - 10;
channel->left = channel->right - cyChannel;
channel->left = lpRect.left + offsettop;
channel->right = channel->left + cyChannel;
}
}
else {
channel->left = lpRect.left + 8;
channel->right = lpRect.right - 8;
if (dwStyle & TBS_BOTH) {
channel->top = (lpRect.bottom - cyChannel) / 2;
channel->bottom = (lpRect.bottom + cyChannel) / 2;
}
else if (dwStyle & TBS_TOP) {
channel->top = lpRect.top + 10;
channel->bottom = channel->top + cyChannel;
channel->left = lpRect.left + offsetedge;
channel->right = lpRect.right - offsetedge;
if (dwStyle & (TBS_BOTH|TBS_TOP)) {
channel->top = lpRect.top + offsettop + 8 ;
channel->bottom = channel->top + cyChannel;
}
else { /* TBS_BOTTOM */
channel->bottom = lpRect.bottom - 10;
channel->top = channel->bottom - cyChannel;
channel->top = lpRect.top + offsettop;
channel->bottom = channel->top + cyChannel;
}
}
}
@ -164,26 +158,40 @@ static VOID
TRACKBAR_CalcThumb (HWND hwnd, TRACKBAR_INFO *infoPtr)
{
RECT *thumb;
int range, width;
int range, width, thumbdepth;
DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
thumb=&infoPtr->rcThumb;
range=infoPtr->nRangeMax - infoPtr->nRangeMin;
if (!range) return; /* FIXME: may this happen? */
if (GetWindowLongA (hwnd, GWL_STYLE) & TBS_VERT) {
width=infoPtr->rcChannel.bottom - infoPtr->rcChannel.top;
thumb->left = infoPtr->rcChannel.left - 1;
thumb->right = infoPtr->rcChannel.left + infoPtr->uThumbLen - 8;
thumb->top = infoPtr->rcChannel.top +
(width*infoPtr->nPos)/range - 5;
thumb->bottom = thumb->top + infoPtr->uThumbLen/3;
thumbdepth = ((INT)((FLOAT)infoPtr->uThumbLen / 4.5) * 2) + 2;
} else {
if (!range) return; /* FIXME: may this happen? */
if (dwStyle & TBS_VERT)
{
width=infoPtr->rcChannel.bottom - infoPtr->rcChannel.top;
if (dwStyle & (TBS_BOTH | TBS_LEFT))
thumb->left = 10;
else
thumb-> left =2;
thumb->right = thumb -> left + infoPtr->uThumbLen;
thumb->top = infoPtr->rcChannel.top +
(width*infoPtr->nPos)/range - thumbdepth/2;
thumb->bottom = thumb->top + thumbdepth;
}
else
{
width=infoPtr->rcChannel.right - infoPtr->rcChannel.left;
thumb->left = infoPtr->rcChannel.left +
(width*infoPtr->nPos)/range - 5;
thumb->right = thumb->left + infoPtr->uThumbLen/3;
thumb->top = infoPtr->rcChannel.top - 1;
thumb->bottom = infoPtr->rcChannel.top + infoPtr->uThumbLen - 8;
thumb->left = infoPtr->rcChannel.left +
(width*infoPtr->nPos)/range - thumbdepth/2;
thumb->right = thumb->left + thumbdepth;
if (dwStyle & (TBS_BOTH | TBS_TOP))
thumb->top = 10;
else
thumb->top = 2;
thumb->bottom = thumb -> top + infoPtr->uThumbLen;
}
}
@ -282,10 +290,10 @@ TRACKBAR_DrawVertTic (TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos,
width=rcChannel.bottom - rcChannel.top;
if (flags & TBS_TOP) {
x=rcChannel.right-2;
x=rcChannel.left-2;
side=-1;
} else {
x=rcChannel.left+2;
x=rcChannel.right+2;
side=1;
}
@ -345,6 +353,141 @@ TRACKBAR_DrawTics (TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos,
}
static VOID
TRACKBAR_DrawThumb(TRACKBAR_INFO *infoPtr, HDC hdc, DWORD dwStyle)
{
HBRUSH oldbr,hbr = GetSysColorBrush(COLOR_BTNFACE);
HPEN oldpen=(HPEN)NULL,hpn;
RECT thumb = infoPtr->rcThumb;
int BlackUntil=3;
int PointCount=6;
POINT points[6];
static INT PointDepth = 4;
oldbr = SelectObject (hdc, hbr);
SetPolyFillMode (hdc,WINDING);
if (dwStyle & TBS_BOTH)
{
points[0].x=thumb.right;
points[0].y=thumb.top;
points[1].x=thumb.right;
points[1].y=thumb.bottom;
points[2].x=thumb.left;
points[2].y=thumb.bottom;
points[3].x=thumb.left;
points[3].y=thumb.top;
points[4].x=points[0].x;
points[4].y=points[0].y;
PointCount = 5;
BlackUntil = 3;
}
else
{
if (dwStyle & TBS_VERT)
{
if (dwStyle & TBS_LEFT)
{
points[0].x=thumb.right;
points[0].y=thumb.top;
points[1].x=thumb.right;
points[1].y=thumb.bottom;
points[2].x=thumb.left + PointDepth;
points[2].y=thumb.bottom;
points[3].x=thumb.left;
points[3].y=(thumb.bottom - thumb.top) / 2 + thumb.top;
points[4].x=thumb.left + PointDepth;
points[4].y=thumb.top;
points[5].x=points[0].x;
points[5].y=points[0].y;
BlackUntil = 4;
}
else
{
points[0].x=thumb.right;
points[0].y=(thumb.bottom - thumb.top) / 2 + thumb.top;
points[1].x=thumb.right - PointDepth;
points[1].y=thumb.bottom;
points[2].x=thumb.left;
points[2].y=thumb.bottom;
points[3].x=thumb.left;
points[3].y=thumb.top;
points[4].x=thumb.right - PointDepth;
points[4].y=thumb.top;
points[5].x=points[0].x;
points[5].y=points[0].y;
}
}
else
{
if (dwStyle & TBS_TOP)
{
points[0].x=(thumb.right - thumb.left) / 2 + thumb.left ;
points[0].y=thumb.top;
points[1].x=thumb.right;
points[1].y=thumb.top + PointDepth;
points[2].x=thumb.right;
points[2].y=thumb.bottom;
points[3].x=thumb.left;
points[3].y=thumb.bottom;
points[4].x=thumb.left;
points[4].y=thumb.top + PointDepth;
points[5].x=points[0].x;
points[5].y=points[0].y;
BlackUntil = 4;
}
else
{
points[0].x=thumb.right;
points[0].y=thumb.top;
points[1].x=thumb.right;
points[1].y=thumb.bottom - PointDepth;
points[2].x=(thumb.right - thumb.left) / 2 + thumb.left ;
points[2].y=thumb.bottom;
points[3].x=thumb.left;
points[3].y=thumb.bottom - PointDepth;
points[4].x=thumb.left;
points[4].y=thumb.top;
points[5].x=points[0].x;
points[5].y=points[0].y;
}
}
}
/*
* Fill the shape
*/
Polygon (hdc, points, PointCount);
/*
* Draw the edge
*/
hpn = GetStockObject(BLACK_PEN);
oldpen = SelectObject(hdc,hpn);
/*
* Black part
*/
Polyline(hdc,points,BlackUntil);
SelectObject(hdc,oldpen);
hpn = GetStockObject(WHITE_PEN);
SelectObject(hdc,hpn);
/*
* White Part
*/
Polyline(hdc,&points[BlackUntil-1],PointCount+1-BlackUntil);
/*
* restore the brush and pen
*/
SelectObject(hdc,oldbr);
if (oldpen)
SelectObject(hdc,oldpen);
}
static VOID
TRACKBAR_Refresh (HWND hwnd, HDC hdc)
@ -419,42 +562,9 @@ TRACKBAR_Refresh (HWND hwnd, HDC hdc)
/* draw thumb */
if (!(dwStyle & TBS_NOTHUMB)) {
HBRUSH hbr = CreateSolidBrush (COLOR_BTNFACE);
RECT thumb = infoPtr->rcThumb;
SelectObject (hdc, hbr);
if (dwStyle & TBS_BOTH) {
FillRect (hdc, &thumb, hbr);
DrawEdge (hdc, &thumb, EDGE_RAISED, BF_TOPLEFT);
} else {
POINT points[5];
/* first, fill the thumb */
/* FIXME: revamp. check for TBS_VERT */
SetPolyFillMode (hdc,WINDING);
points[0].x=thumb.left;
points[0].y=thumb.top;
points[1].x=thumb.right - 1;
points[1].y=thumb.top;
points[2].x=thumb.right - 1;
points[2].y=thumb.bottom -2;
points[3].x=thumb.left;
points[3].y=thumb.bottom -2;
points[4].x=points[0].x;
points[4].y=points[0].y;
Polygon (hdc, points, 5);
if (dwStyle & TBS_VERT) {
/* draw edge */
} else {
DrawEdge (hdc, &thumb, EDGE_RAISED, BF_TOPLEFT);
}
}
DeleteObject (hbr);
if (!(dwStyle & TBS_NOTHUMB))
{
TRACKBAR_DrawThumb(infoPtr,hdc,dwStyle);
}
if (infoPtr->bFocus)
@ -1144,23 +1254,15 @@ TRACKBAR_LButtonDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
TRACKBAR_INFO *infoPtr = TRACKBAR_GetInfoPtr (hwnd);
DWORD dwStyle = GetWindowLongA (hwnd, GWL_STYLE);
int clickPlace,prevPos,vertical;
DOUBLE clickPos;
POINT clickPoint;
SetFocus (hwnd);
vertical = (dwStyle & TBS_VERT) ? 1 : 0;
if (vertical)
clickPlace=(INT)HIWORD(lParam);
else
clickPlace=(INT)LOWORD(lParam);
clickPoint.y = HIWORD(lParam);
clickPoint.x = LOWORD(lParam);
if ((vertical &&
(clickPlace>infoPtr->rcThumb.top) &&
(clickPlace<infoPtr->rcThumb.bottom)) ||
(!vertical &&
(clickPlace>infoPtr->rcThumb.left) &&
(clickPlace<infoPtr->rcThumb.right))) {
if (PtInRect(&(infoPtr->rcThumb),clickPoint))
{
infoPtr->flags |= TB_DRAG_MODE;
if (dwStyle & TBS_TOOLTIPS) { /* enable tooltip */
TTTOOLINFOA ti;
@ -1181,25 +1283,39 @@ TRACKBAR_LButtonDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
}
return 0;
}
else if (PtInRect(&(infoPtr->rcChannel),clickPoint))
{
int clickPlace,prevPos,vertical;
DOUBLE clickPos;
clickPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace, vertical);
prevPos = infoPtr->nPos;
vertical = (dwStyle & TBS_VERT) ? 1 : 0;
if (vertical)
clickPlace=(INT)HIWORD(lParam);
else
clickPlace=(INT)LOWORD(lParam);
if (vertical ^ (clickPos < (int)prevPos)) { /* similar to VK_NEXT */
infoPtr->nPos += infoPtr->nPageSize;
if (infoPtr->nPos > infoPtr->nRangeMax)
infoPtr->nPos = infoPtr->nRangeMax;
TRACKBAR_SendNotify (hwnd, TB_PAGEUP);
} else {
infoPtr->nPos -= infoPtr->nPageSize; /* similar to VK_PRIOR */
if (infoPtr->nPos < infoPtr->nRangeMin)
infoPtr->nPos = infoPtr->nRangeMin;
TRACKBAR_SendNotify (hwnd, TB_PAGEDOWN);
}
clickPos = TRACKBAR_ConvertPlaceToPosition(infoPtr, clickPlace,
vertical);
prevPos = infoPtr->nPos;
if (clickPos > (int)prevPos)
{ /* similar to VK_NEXT */
infoPtr->nPos += infoPtr->nPageSize;
if (infoPtr->nPos > infoPtr->nRangeMax)
infoPtr->nPos = infoPtr->nRangeMax;
TRACKBAR_SendNotify (hwnd, TB_PAGEUP);
}
else
{
infoPtr->nPos -= infoPtr->nPageSize; /* similar to VK_PRIOR */
if (infoPtr->nPos < infoPtr->nRangeMin)
infoPtr->nPos = infoPtr->nRangeMin;
TRACKBAR_SendNotify (hwnd, TB_PAGEDOWN);
}
if (prevPos!=infoPtr->nPos) {
infoPtr->flags |= TB_THUMBPOSCHANGED;
InvalidateRect (hwnd, NULL, FALSE);
if (prevPos!=infoPtr->nPos) {
infoPtr->flags |= TB_THUMBPOSCHANGED;
InvalidateRect (hwnd, NULL, FALSE);
}
}
return 0;