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/*
* Copyright (C) 2002-2004, 2006-2013 by the Widelands Development Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "wui/mapview.h"
#include "base/macros.h"
#include "graphic/game_renderer.h"
#include "graphic/graphic.h"
#include "graphic/rendertarget.h"
#include "logic/map.h"
#include "logic/player.h"
#include "wlapplication.h"
#include "wui/interactive_base.h"
#include "wui/interactive_player.h"
#include "wui/mapviewpixelfunctions.h"
MapView::MapView(
UI::Panel* parent, int32_t x, int32_t y, uint32_t w, uint32_t h, InteractiveBase& player)
: UI::Panel(parent, x, y, w, h),
renderer_(new GameRenderer()),
intbase_(player),
viewpoint_(Point(0, 0)),
dragging_(false) {
}
MapView::~MapView() {
// explicit destructor so that smart pointer destructors
// with forward-declared types are properly instantiated
}
/// Moves the mouse cursor so that it is directly above the given node
void MapView::warp_mouse_to_node(Widelands::Coords const c) {
const Widelands::Map& map = intbase().egbase().map();
Point p;
MapviewPixelFunctions::get_save_pix(map, c, p.x, p.y);
p -= viewpoint_;
// If the user has scrolled the node outside the viewable area, he most
// surely doesn't want to jump there.
if (p.x < get_w() && p.y < get_h()) {
if (p.x <= 0)
warp_mouse_to_node(Widelands::Coords(c.x + map.get_width(), c.y));
else if (p.y <= 0)
warp_mouse_to_node(Widelands::Coords(c.x, c.y + map.get_height()));
else {
set_mouse_pos(p);
track_sel(p);
}
}
}
/*
===============
This is the guts!! this function draws the whole
map the user can see. we spend a lot of time
in this function
===============
*/
void MapView::draw(RenderTarget& dst) {
Widelands::EditorGameBase& egbase = intbase().egbase();
if (upcast(Widelands::Game, game, &egbase)) {
// Bail out if the game isn't actually loaded.
// This fixes a crash with displaying an error dialog during loading.
if (!game->is_loaded())
return;
}
if (upcast(InteractivePlayer const, interactive_player, &intbase())) {
renderer_->rendermap(dst, egbase, viewpoint_, interactive_player->player());
} else {
renderer_->rendermap(dst, egbase, viewpoint_);
}
}
void MapView::set_changeview(const MapView::ChangeViewFn& fn) {
changeview_ = fn;
}
/*
===============
Set the viewpoint to the given pixel coordinates
===============
*/
void MapView::set_viewpoint(Point vp, bool jump) {
if (vp == viewpoint_)
return;
MapviewPixelFunctions::normalize_pix(intbase().egbase().map(), vp);
viewpoint_ = vp;
if (changeview_)
changeview_(vp, jump);
changeview(viewpoint_.x, viewpoint_.y);
}
void MapView::stop_dragging() {
WLApplication::get()->set_mouse_lock(false);
grab_mouse(false);
dragging_ = false;
}
/**
* Mousepressess and -releases on the map:
* Right-press: enable dragging
* Right-release: disable dragging
* Left-press: field action window
*/
bool MapView::handle_mousepress(uint8_t const btn, int32_t const x, int32_t const y) {
if (btn == SDL_BUTTON_LEFT) {
stop_dragging();
track_sel(Point(x, y));
fieldclicked();
} else if (btn == SDL_BUTTON_RIGHT) {
dragging_ = true;
grab_mouse(true);
WLApplication::get()->set_mouse_lock(true);
}
return true;
}
bool MapView::handle_mouserelease(const uint8_t btn, int32_t, int32_t) {
if (btn == SDL_BUTTON_RIGHT && dragging_)
stop_dragging();
return true;
}
/*
===============
Scroll the view according to mouse movement.
===============
*/
bool MapView::handle_mousemove(
uint8_t const state, int32_t x, int32_t y, int32_t xdiff, int32_t ydiff) {
if (dragging_) {
if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
set_rel_viewpoint(Point(xdiff, ydiff), false);
else
stop_dragging();
}
if (!intbase().get_sel_freeze())
track_sel(Point(x, y));
return true;
}
/*
===============
MapView::track_sel(int32_t mx, int32_t my)
Move the sel to the given mouse position.
Does not honour sel freeze.
===============
*/
void MapView::track_sel(Point m) {
m += viewpoint_;
intbase_.set_sel_pos(
MapviewPixelFunctions::calc_node_and_triangle(intbase().egbase().map(), m.x, m.y));
}
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