256 lines
6.9 KiB
C
256 lines
6.9 KiB
C
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#include "ctlspriv.h"
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static struct {
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WPARAM vk1;
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WPARAM vk2;
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int dx;
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int dy;
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} arrNumMaps[] =
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{
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{ VK_NUMPAD1, VK_END, -RM_SCROLLUNIT, RM_SCROLLUNIT,},
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{ VK_NUMPAD2, VK_DOWN, 0, RM_SCROLLUNIT},
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{ VK_NUMPAD3, VK_NEXT, RM_SCROLLUNIT, RM_SCROLLUNIT},
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{ VK_NUMPAD4, VK_LEFT, -RM_SCROLLUNIT, 0},
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{ VK_NUMPAD5, VK_CLEAR, 0, 0},
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{ VK_NUMPAD6, VK_RIGHT, RM_SCROLLUNIT, 0},
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{ VK_NUMPAD7, VK_HOME, -RM_SCROLLUNIT, -RM_SCROLLUNIT},
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{ VK_NUMPAD8, VK_UP, 0, -RM_SCROLLUNIT},
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{ VK_NUMPAD9, VK_PRIOR, RM_SCROLLUNIT, -RM_SCROLLUNIT},
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};
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// do some keyboard handling...
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// this works like USER's arrow keys for resizing
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void RM_HandleKeyDown(LPRECT prcHot, WPARAM wParam, LPARAM lParam)
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{
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int i;
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POINT pt;
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GetCursorPos(&pt);
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for (i = ARRAYSIZE(arrNumMaps) - 1 ; i >= 0; i--) {
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if (wParam == arrNumMaps[i].vk1 ||
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wParam == arrNumMaps[i].vk2) {
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break;
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}
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}
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if (i == -1) {
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ReleaseCapture();
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return;
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}
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// this deals with if the cursor is within the bounds of the rect
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if (pt.x < prcHot->right &&
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pt.x >= prcHot->left &&
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arrNumMaps[i].dx) {
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if (arrNumMaps[i].dx > 0)
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pt.x = prcHot->right - 2;
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else
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pt.x = prcHot->left + 1;
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}
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if (pt.y < prcHot->bottom &&
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pt.y >= prcHot->top &&
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arrNumMaps[i].dy) {
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if (arrNumMaps[i].dy > 0)
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pt.y = prcHot->bottom - 2;
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else
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pt.y = prcHot->top + 1;
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}
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pt.x += arrNumMaps[i].dx;
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pt.y += arrNumMaps[i].dy;
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if (!arrNumMaps[i].dx && !arrNumMaps[i].dy) {
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// special case this for centering
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pt.x = (prcHot->right + prcHot->left) / 2;
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pt.y = (prcHot->top + prcHot->bottom) / 2;
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}
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// all we do is move the cursor.. the RM_CheckScroll will do the actual
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// scrolling for us.
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SetCursorPos(pt.x, pt.y);
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}
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void RM_GetScrollXY(PREADERMODEINFO prmi, LPRECT prcHot, LPINT pdx, LPINT pdy)
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{
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POINT pt;
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GetCursorPos(&pt);
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*pdx = 0;
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*pdy = 0;
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if (pt.x <= prcHot->left) {
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*pdx = ((pt.x - prcHot->left) / RM_SCROLLUNIT) - 1;
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} else if (pt.x >= prcHot->right) {
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*pdx = ((pt.x - prcHot->right) / RM_SCROLLUNIT) + 1;
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}
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if (pt.y <= prcHot->top) {
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*pdy = ((pt.y - prcHot->top) / RM_SCROLLUNIT) - 1;
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} else if (pt.y >= prcHot->bottom) {
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*pdy = ((pt.y - prcHot->bottom) / RM_SCROLLUNIT) + 1;
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}
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if (prmi->fFlags & RMF_VERTICALONLY)
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*pdx = 0;
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if (prmi->fFlags & RMF_HORIZONTALONLY)
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*pdy = 0;
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}
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void RM_CheckScroll(PREADERMODEINFO prmi, LPRECT prcHot)
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{
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int dx;
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int dy;
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RM_GetScrollXY(prmi, prcHot, &dx, &dy);
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prmi->pfnScroll(prmi, dx, dy);
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}
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void RM_SetCursor(PREADERMODEINFO prmi, LPRECT prcHot)
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{
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int dx;
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int dy;
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LPCTSTR pRes;
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RM_GetScrollXY(prmi, prcHot, &dx, &dy);
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// default is center
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if (prmi->fFlags & RMF_VERTICALONLY)
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pRes = IDC_VERTICALONLY;
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else if (prmi->fFlags & RMF_HORIZONTALONLY)
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pRes = IDC_HORIZONTALONLY;
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else
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pRes = IDC_MOVE2D;
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// multiply to figure out if either is zero and also the sign parity
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if (dy * dx) {
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// diagonal case
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if (dy > 0) {
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if (dx > 0)
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pRes = IDC_SOUTHEAST;
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else
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pRes = IDC_SOUTHWEST;
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} else {
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if (dx > 0)
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pRes = IDC_NORTHEAST;
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else
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pRes = IDC_NORTHWEST;
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}
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} else {
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// simple horizontal or vertical case
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if (dy > 0)
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pRes = IDC_SOUTH;
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else if (dy < 0)
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pRes = IDC_NORTH;
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else if (dx < 0)
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pRes = IDC_WEST;
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else if (dx > 0)
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pRes = IDC_EAST;
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}
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SetCursor(LoadCursor(HINST_THISDLL, pRes));
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}
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void DoReaderMode(PREADERMODEINFO prmi)
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{
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RECT rcHot;
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if (!prmi->hwnd || prmi->cbSize != sizeof(*prmi))
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return;
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SetCapture(prmi->hwnd);
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// if they didn't pass in a rect, then use the window
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if (!prmi->prc) {
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GetWindowRect(prmi->hwnd, &rcHot );
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} else {
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rcHot = *prmi->prc;
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MapWindowPoints(prmi->hwnd, HWND_DESKTOP, (LPPOINT)&rcHot, 2);
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}
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// set the cursor to the center of the hot rect if they ask us to
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if (prmi->fFlags & RMF_ZEROCURSOR) {
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SetCursorPos((rcHot.left + rcHot.right)/2,
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(rcHot.top + rcHot.bottom)/2);
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}
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while (GetCapture() == prmi->hwnd) {
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BOOL fMessage;
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MSG32 msg32;
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RM_CheckScroll(prmi, &rcHot);
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// Try to peek keyboard message first, then mouse message,
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// and finally, other message. This is for raid 44392.
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// During scrolling, Trident might generate too many WM_PAINT
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// messages that push keyboard/mouse message (that DoReaderMode()
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// uses to stop auto-scroll mode) down in message pump, and we can
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// not get those messages until we peek and process all these
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// WM_PAINT messages. This is way cuto-scroll mode can be stopped
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// only by moving cursor back to origin circle (Trident does not
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// scroll, so no need to paint). Trident's scroll performance
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// issue will be worked on after RTM (raid 33232).
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//
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fMessage = PeekMessage32(&msg32, NULL, WM_KEYFIRST, WM_KEYLAST,
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PM_REMOVE, TRUE);
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if (!fMessage)
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{
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fMessage = PeekMessage32(&msg32, NULL, WM_MOUSEFIRST, WM_MOUSELAST,
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PM_REMOVE, TRUE);
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if (!fMessage)
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{
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fMessage = PeekMessage32(&msg32, NULL, 0, 0, PM_REMOVE, TRUE);
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}
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}
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if (fMessage) {
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if (!prmi->pfnTranslateDispatch ||
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!prmi->pfnTranslateDispatch((LPMSG)&msg32)) {
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if (msg32.message == g_msgMSWheel)
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goto BailOut;
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switch(msg32.message) {
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case WM_LBUTTONUP:
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case WM_RBUTTONUP:
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case WM_MBUTTONUP:
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case WM_LBUTTONDOWN:
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case WM_RBUTTONDOWN:
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case WM_MBUTTONDOWN:
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case WM_SYSKEYDOWN:
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BailOut:
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ReleaseCapture();
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break;
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case WM_KEYDOWN:
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// if it's an arrow key, move the mouse cursor
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RM_HandleKeyDown(&rcHot, msg32.wParam, msg32.lParam);
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break;
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case WM_MOUSEMOVE:
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case WM_SETCURSOR:
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RM_SetCursor(prmi, &rcHot);
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break;
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default:
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TranslateMessage32(&msg32, TRUE);
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DispatchMessage32(&msg32, TRUE);
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}
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}
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}
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else WaitMessage();
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}
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}
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