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Implement taking smallmap screenshots.

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This is largely based on this patch:
http://www.tt-forums.net/viewtopic.php?p=849533#p849533
with the following changes:
* this uses a button in the smallmap window instead of a console command
* screenshot now uses zoom level and mode of smallmap window
This commit is contained in:
Jonathan G Rennison
2015-08-04 01:26:32 +01:00
parent 163c30570b
commit 948b4e1d5e
6 changed files with 128 additions and 9 deletions
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75
src/smallmap_gui.cpp
View File

@@ -23,6 +23,7 @@
#include "sound_func.h"
#include "window_func.h"
#include "company_base.h"
#include "screenshot.h"
#include "smallmap_gui.h"
@@ -936,7 +937,7 @@ void SmallMapWindow::DrawMapIndicators() const
*
* @param dpi pointer to pixel to write onto
*/
void SmallMapWindow::DrawSmallMap(DrawPixelInfo *dpi) const
void SmallMapWindow::DrawSmallMap(DrawPixelInfo *dpi, bool draw_indicators) const
{
Blitter *blitter = BlitterFactory::GetCurrentBlitter();
DrawPixelInfo *old_dpi;
@@ -992,7 +993,7 @@ void SmallMapWindow::DrawSmallMap(DrawPixelInfo *dpi) const
if (this->show_towns) this->DrawTowns(dpi);
/* Draw map indicators */
this->DrawMapIndicators();
if (draw_indicators) this->DrawMapIndicators();
_cur_dpi = old_dpi;
}
@@ -1487,6 +1488,10 @@ int SmallMapWindow::GetPositionOnLegend(Point pt)
this->SetWidgetLoweredState(WID_SM_SHOW_HEIGHT, _smallmap_show_heightmap);
this->SetDirty();
break;
case WID_SM_SCREENSHOT:
TakeScreenshot();
break;
}
}
@@ -1650,6 +1655,71 @@ Point SmallMapWindow::GetStationMiddle(const Station *st) const
return ret;
}
/**
* Take a screenshot of the contents of the smallmap window, at the current zoom level and mode
* This calls MakeSmallMapScreenshot which uses ScreenshotCallbackHandler as the screenshot callback
*/
void SmallMapWindow::TakeScreenshot()
{
int32 width = ((MapMaxX() + MapMaxY()) * 2) / this->zoom;
int32 height = (MapMaxX() + MapMaxY() + 1) / this->zoom;
int32 saved_scroll_x = this->scroll_x;
int32 saved_scroll_y = this->scroll_y;
int32 saved_subscroll = this->subscroll;
this->subscroll = 0;
MakeSmallMapScreenshot(width, height, this);
this->scroll_x = saved_scroll_x;
this->scroll_y = saved_scroll_y;
this->subscroll = saved_subscroll;
}
/**
* Callback called by the screenshot code to draw a section of the smallmap to the output buffer
* @param buf Videobuffer with same bitdepth as current blitter
* @param y First line to render
* @param pitch Pitch of the videobuffer
* @param n Number of lines to render
*/
void SmallMapWindow::ScreenshotCallbackHandler(void *buf, uint y, uint pitch, uint n)
{
DrawPixelInfo dpi, *old_dpi;
/* We are no longer rendering to the screen */
DrawPixelInfo old_screen = _screen;
bool old_disable_anim = _screen_disable_anim;
_screen.dst_ptr = buf;
_screen.width = pitch;
_screen.height = n;
_screen.pitch = pitch;
_screen_disable_anim = true;
old_dpi = _cur_dpi;
_cur_dpi = &dpi;
dpi.dst_ptr = buf;
dpi.height = n;
dpi.width = ((MapMaxX() + MapMaxY()) * 2) / this->zoom;
dpi.pitch = pitch;
dpi.zoom = ZOOM_LVL_NORMAL;
dpi.left = 0;
dpi.top = y;
int32 pos = (((int32)MapMaxX() + 1) * TILE_PIXELS) / 4;
this->scroll_x = pos;
this->scroll_y = -pos;
/* make the screenshot */
this->DrawSmallMap(&dpi, false);
_cur_dpi = old_dpi;
/* Switch back to rendering to the screen */
_screen = old_screen;
_screen_disable_anim = old_disable_anim;
}
SmallMapWindow::SmallMapType SmallMapWindow::map_type = SMT_CONTOUR;
bool SmallMapWindow::show_towns = true;
int SmallMapWindow::max_heightlevel = -1;
@@ -1798,6 +1868,7 @@ static const NWidgetPart _nested_smallmap_widgets[] = {
NWidgetFunction(SmallMapDisplay), // Smallmap display and legend bar + image buttons.
/* Bottom button row and resize box. */
NWidget(NWID_HORIZONTAL),
NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_SM_SCREENSHOT), SetDataTip(STR_SMALLMAP_SCREENSHOT, STR_NULL),
NWidget(NWID_SELECTION, INVALID_COLOUR, WID_SM_SELECT_BUTTONS),
NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_SM_ENABLE_ALL), SetDataTip(STR_SMALLMAP_ENABLE_ALL, STR_NULL),