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comctl32: Draw hot parts of themed scrollbars.

This commit is contained in:
Mark Harmstone 2015-03-03 21:56:37 +00:00 committed by Alexandre Julliard
parent d9708ecb93
commit a20c920bbd
1 changed files with 195 additions and 0 deletions
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195
dlls/comctl32/theme_scrollbar.c
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@ -48,6 +48,9 @@ enum SCROLL_HITTEST
SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
};
static HWND tracking_win = 0;
static enum SCROLL_HITTEST tracking_hot_part = SCROLL_NOWHERE;
WINE_DEFAULT_DEBUG_CHANNEL(theme_scroll);
static void calc_thumb_dimensions(unsigned int size, SCROLLINFO *si, unsigned int *thumbpos, unsigned int *thumbsize)
@ -149,6 +152,164 @@ static enum SCROLL_HITTEST hit_test(HWND hwnd, HTHEME theme, POINT pt)
return SCROLL_BOTTOM_RECT;
}
static void redraw_part(HWND hwnd, HTHEME theme, enum SCROLL_HITTEST part)
{
DWORD style = GetWindowLongW(hwnd, GWL_STYLE);
BOOL vertical = style & SBS_VERT;
SIZE sz;
RECT r, partrect;
unsigned int size, upsize, downsize;
if (part == SCROLL_NOWHERE) { /* redraw everything */
InvalidateRect(hwnd, NULL, TRUE);
return;
}
GetWindowRect(hwnd, &r);
OffsetRect(&r, -r.left, -r.top);
if (vertical) {
size = r.bottom;
if (FAILED(GetThemePartSize(theme, NULL, SBP_ARROWBTN, ABS_UPNORMAL, NULL, TS_DRAW, &sz))) {
WARN("Could not get up arrow size.\n");
upsize = 0;
} else
upsize = sz.cy;
if (FAILED(GetThemePartSize(theme, NULL, SBP_ARROWBTN, ABS_DOWNNORMAL, NULL, TS_DRAW, &sz))) {
WARN("Could not get down arrow size.\n");
downsize = 0;
} else
downsize = sz.cy;
} else {
size = r.right;
if (FAILED(GetThemePartSize(theme, NULL, SBP_ARROWBTN, ABS_LEFTNORMAL, NULL, TS_DRAW, &sz))) {
WARN("Could not get left arrow size.\n");
upsize = 0;
} else
upsize = sz.cx;
if (FAILED(GetThemePartSize(theme, NULL, SBP_ARROWBTN, ABS_RIGHTNORMAL, NULL, TS_DRAW, &sz))) {
WARN("Could not get right arrow size.\n");
downsize = 0;
} else
downsize = sz.cx;
}
if (size < SCROLL_MIN_RECT + upsize + downsize)
upsize = downsize = (size - SCROLL_MIN_RECT)/2;
partrect = r;
if (part == SCROLL_TOP_ARROW) {
if (vertical)
partrect.bottom = partrect.top + upsize;
else
partrect.right = partrect.left + upsize;
} else if (part == SCROLL_BOTTOM_ARROW) {
if (vertical)
partrect.top = partrect.bottom - downsize;
else
partrect.left = partrect.right - downsize;
} else {
unsigned int thumbpos, thumbsize;
SCROLLINFO si;
si.cbSize = sizeof(si);
si.fMask = SIF_ALL;
if (!GetScrollInfo(hwnd, SB_CTL, &si)) {
WARN("GetScrollInfo failed.\n");
return;
}
calc_thumb_dimensions(size - upsize - downsize, &si, &thumbpos, &thumbsize);
if (part == SCROLL_TOP_RECT) {
if (vertical) {
partrect.top = r.top + upsize;
partrect.bottom = partrect.top + thumbpos;
} else {
partrect.left = r.left + upsize;
partrect.right = partrect.left + thumbpos;
}
} else if (part == SCROLL_THUMB) {
if (vertical) {
partrect.top = r.top + upsize + thumbpos;
partrect.bottom = partrect.top + thumbsize;
} else {
partrect.left = r.left + upsize + thumbpos;
partrect.right = partrect.left + thumbsize;
}
} else if (part == SCROLL_BOTTOM_RECT) {
if (vertical) {
partrect.top = r.top + upsize + thumbpos + thumbsize;
partrect.bottom = r.bottom - downsize;
} else {
partrect.left = r.left + upsize + thumbpos + thumbsize;
partrect.right = r.right - downsize;
}
}
}
InvalidateRect(hwnd, &partrect, TRUE);
}
static void scroll_event(HWND hwnd, HTHEME theme, UINT msg, POINT pt)
{
enum SCROLL_HITTEST hittest;
TRACKMOUSEEVENT tme;
if (GetWindowLongW(hwnd, GWL_STYLE) & (SBS_SIZEGRIP | SBS_SIZEBOX))
return;
hittest = hit_test(hwnd, theme, pt);
switch (msg)
{
case WM_MOUSEMOVE:
hittest = hit_test(hwnd, theme, pt);
tracking_win = hwnd;
break;
case WM_MOUSELEAVE:
if (tracking_win == hwnd) {
hittest = SCROLL_NOWHERE;
}
break;
}
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_QUERY;
TrackMouseEvent(&tme);
if (!(tme.dwFlags & TME_LEAVE) || tme.hwndTrack != hwnd) {
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
TrackMouseEvent(&tme);
}
if (tracking_win != hwnd && msg == WM_MOUSELEAVE) {
redraw_part(hwnd, theme, SCROLL_NOWHERE);
return;
}
if (tracking_win == hwnd && hittest != tracking_hot_part) {
enum SCROLL_HITTEST oldhotpart = tracking_hot_part;
tracking_hot_part = hittest;
if (hittest != SCROLL_NOWHERE)
redraw_part(hwnd, theme, hittest);
else
tracking_win = 0;
if (oldhotpart != SCROLL_NOWHERE)
redraw_part(hwnd, theme, oldhotpart);
}
}
static void paint_scrollbar(HWND hwnd, HTHEME theme)
{
HDC dc;
@ -197,6 +358,15 @@ static void paint_scrollbar(HWND hwnd, HTHEME theme)
uppertrackstate = SCRBS_NORMAL;
lowertrackstate = SCRBS_NORMAL;
thumbstate = SCRBS_NORMAL;
if (tracking_win == hwnd) {
if (tracking_hot_part == SCROLL_TOP_RECT)
uppertrackstate = SCRBS_HOT;
else if (tracking_hot_part == SCROLL_BOTTOM_RECT)
lowertrackstate = SCRBS_HOT;
else if (tracking_hot_part == SCROLL_THUMB)
thumbstate = SCRBS_HOT;
}
}
if (vertical) {
@ -209,6 +379,13 @@ static void paint_scrollbar(HWND hwnd, HTHEME theme)
} else {
uparrowstate = ABS_UPNORMAL;
downarrowstate = ABS_DOWNNORMAL;
if (tracking_win == hwnd) {
if (tracking_hot_part == SCROLL_TOP_ARROW)
uparrowstate = ABS_UPHOT;
else if (tracking_hot_part == SCROLL_BOTTOM_ARROW)
downarrowstate = ABS_DOWNHOT;
}
}
if (FAILED(GetThemePartSize(theme, dc, SBP_ARROWBTN, uparrowstate, NULL, TS_DRAW, &upsize))) {
@ -277,6 +454,13 @@ static void paint_scrollbar(HWND hwnd, HTHEME theme)
} else {
leftarrowstate = ABS_LEFTNORMAL;
rightarrowstate = ABS_RIGHTNORMAL;
if (tracking_win == hwnd) {
if (tracking_hot_part == SCROLL_TOP_ARROW)
leftarrowstate = ABS_LEFTHOT;
else if (tracking_hot_part == SCROLL_BOTTOM_ARROW)
rightarrowstate = ABS_RIGHTHOT;
}
}
if (FAILED(GetThemePartSize(theme, dc, SBP_ARROWBTN, leftarrowstate, NULL, TS_DRAW, &leftsize))) {
@ -348,6 +532,7 @@ LRESULT CALLBACK THEMING_ScrollbarSubclassProc (HWND hwnd, UINT msg,
const WCHAR* themeClass = WC_SCROLLBARW;
HTHEME theme;
LRESULT result;
POINT pt;
TRACE("(%p, 0x%x, %lu, %lu, %lu)\n", hwnd, msg, wParam, lParam, dwRefData);
@ -382,6 +567,16 @@ LRESULT CALLBACK THEMING_ScrollbarSubclassProc (HWND hwnd, UINT msg,
paint_scrollbar(hwnd, theme);
break;
case WM_MOUSEMOVE:
case WM_MOUSELEAVE:
theme = GetWindowTheme(hwnd);
if (!theme) return THEMING_CallOriginalClass(hwnd, msg, wParam, lParam);
pt.x = (short)LOWORD(lParam);
pt.y = (short)HIWORD(lParam);
scroll_event(hwnd, theme, msg, pt);
break;
default:
return THEMING_CallOriginalClass(hwnd, msg, wParam, lParam);
}