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(svn r18984) -Add: Viewport place methods for dragging a line with limited size.

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This commit is contained in:
terkhen 2010-02-01 23:13:15 +00:00
parent 615324130b
commit 8849943da5
2 changed files with 22 additions and 3 deletions
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23
src/viewport.cpp
View File

@ -2526,6 +2526,8 @@ void VpSelectTilesWithMethod(int x, int y, ViewportPlaceMethod method)
sx = _thd.selstart.x;
sy = _thd.selstart.y;
int limit = 0;
switch (method) {
case VPM_X_OR_Y: // drag in X or Y direction
if (abs(sy - y) < abs(sx - x)) {
@ -2536,15 +2538,29 @@ void VpSelectTilesWithMethod(int x, int y, ViewportPlaceMethod method)
style = HT_DIR_Y;
}
goto calc_heightdiff_single_direction;
case VPM_X_LIMITED: // Drag in X direction (limited size).
limit = (_thd.sizelimit - 1) * TILE_SIZE;
/* Fallthrough. */
case VPM_FIX_X: // drag in Y direction
x = sx;
style = HT_DIR_Y;
goto calc_heightdiff_single_direction;
case VPM_Y_LIMITED: // Drag in Y direction (limited size).
limit = (_thd.sizelimit - 1) * TILE_SIZE;
/* Fallthrough. */
case VPM_FIX_Y: // drag in X direction
y = sy;
style = HT_DIR_X;
calc_heightdiff_single_direction:;
if (limit > 0) {
x = sx + Clamp(x - sx, -limit, limit);
y = sy + Clamp(y - sy, -limit, limit);
}
if (_settings_client.gui.measure_tooltip) {
TileIndex t0 = TileVirtXY(sx, sy);
TileIndex t1 = TileVirtXY(x, y);
@ -2567,11 +2583,12 @@ calc_heightdiff_single_direction:;
ShowMeasurementTooltips(measure_strings_length[index], index, params);
} break;
case VPM_X_AND_Y_LIMITED: { // drag an X by Y constrained rect area
int limit = (_thd.sizelimit - 1) * TILE_SIZE;
case VPM_X_AND_Y_LIMITED: // Drag an X by Y constrained rect area.
limit = (_thd.sizelimit - 1) * TILE_SIZE;
x = sx + Clamp(x - sx, -limit, limit);
y = sy + Clamp(y - sy, -limit, limit);
} // Fallthrough
/* Fallthrough. */
case VPM_X_AND_Y: { // drag an X by Y area
if (_settings_client.gui.measure_tooltip) {
static const StringID measure_strings_area[] = {

2
src/viewport_type.h
View File

@ -77,6 +77,8 @@ enum ViewportPlaceMethod {
VPM_X_AND_Y_LIMITED = 4, ///< area of land of limited size
VPM_FIX_HORIZONTAL = 5, ///< drag only in horizontal direction
VPM_FIX_VERTICAL = 6, ///< drag only in vertical direction
VPM_X_LIMITED = 7, ///< Drag only in X axis with limited size
VPM_Y_LIMITED = 8, ///< Drag only in Y axis with limited size
VPM_RAILDIRS = 0x40, ///< all rail directions
VPM_SIGNALDIRS = 0x80, ///< similiar to VMP_RAILDIRS, but with different cursor
};