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Add clip rect feature to Graphics and gfx.setClipRect

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Also retire the separate VideoBuffer in Panel and hiding ToolButtons in the GameView ToolButton panel in favour of clip rects.
This commit is contained in:
Tamás Bálint Misius 2022-10-11 20:24:11 +02:00
parent f18bd6553f
commit 715333295b
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12 changed files with 127 additions and 33 deletions
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20
src/graphics/Graphics.cpp
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@ -1081,3 +1081,23 @@ VideoBuffer Graphics::DumpFrame()
std::copy(vid, vid+(WINDOWW*WINDOWH), newBuffer.Buffer);
return newBuffer;
}
void Graphics::SetClipRect(int &x, int &y, int &w, int &h)
{
int newX = x;
int newY = y;
int newW = w;
int newH = h;
if (newX < 0) newX = 0;
if (newY < 0) newY = 0;
if (newW > WINDOWW - newX) newW = WINDOWW - newX;
if (newH > WINDOWH - newY) newH = WINDOWH - newY;
x = clipx1;
y = clipy1;
w = clipx2 - clipx1;
h = clipy2 - clipy1;
clipx1 = newX;
clipy1 = newY;
clipx2 = newX + newW;
clipy2 = newY + newH;
}

12
src/graphics/Graphics.h
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@ -70,6 +70,11 @@ public:
class Graphics
{
int clipx1 = 0;
int clipy1 = 0;
int clipx2 = WINDOWW;
int clipy2 = WINDOWH;
public:
pixel *vid;
int sdl_scale;
@ -122,13 +127,14 @@ public:
void clearrect(int x, int y, int width, int height);
void gradientrect(int x, int y, int width, int height, int r, int g, int b, int a, int r2, int g2, int b2, int a2);
void draw_image(pixel *img, int x, int y, int w, int h, int a);
void draw_image(const VideoBuffer & vidBuf, int x, int y, int a);
void draw_image(VideoBuffer * vidBuf, int x, int y, int a);
void draw_image(const pixel *img, int x, int y, int w, int h, int a);
void draw_image(const VideoBuffer * vidBuf, int x, int y, int a);
void draw_rgba_image(const unsigned char *data, int x, int y, float alpha);
Graphics();
~Graphics();
void SetClipRect(int &x, int &y, int &w, int &h);
};
#endif

41
src/graphics/RasterDrawMethods.inl
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@ -104,7 +104,11 @@ int PIXELMETHODS_CLASS::addchar(int x, int y, String::value_type c, int r, int g
TPT_INLINE void PIXELMETHODS_CLASS::xor_pixel(int x, int y)
{
int c;
if (x<0 || y<0 || x>=XRES || y>=YRES)
#ifdef DO_CLIPCHECK
if (x<clipx1 || y<clipy1 || x>=clipx2 || y>=clipy2)
#else
if (x<0 || y<0 || x>=VIDXRES || y>=VIDYRES)
#endif
return;
c = vid[y*(VIDXRES)+x];
c = PIXB(c) + 3*PIXG(c) + 2*PIXR(c);
@ -117,7 +121,11 @@ TPT_INLINE void PIXELMETHODS_CLASS::xor_pixel(int x, int y)
void PIXELMETHODS_CLASS::blendpixel(int x, int y, int r, int g, int b, int a)
{
pixel t;
#ifdef DO_CLIPCHECK
if (x<clipx1 || y<clipy1 || x>=clipx2 || y>=clipy2)
#else
if (x<0 || y<0 || x>=VIDXRES || y>=VIDYRES)
#endif
return;
if (a!=255)
{
@ -132,7 +140,11 @@ void PIXELMETHODS_CLASS::blendpixel(int x, int y, int r, int g, int b, int a)
void PIXELMETHODS_CLASS::addpixel(int x, int y, int r, int g, int b, int a)
{
pixel t;
#ifdef DO_CLIPCHECK
if (x<clipx1 || y<clipy1 || x>=clipx2 || y>=clipy2)
#else
if (x<0 || y<0 || x>=VIDXRES || y>=VIDYRES)
#endif
return;
t = vid[y*(VIDXRES)+x];
r = (a*r + 255*PIXR(t)) >> 8;
@ -376,6 +388,20 @@ void PIXELMETHODS_CLASS::clearrect(int x, int y, int w, int h)
w -= 1;
h -= 1;
#ifdef DO_CLIPCHECK
if (x+w > clipx2) w = clipx2-x;
if (y+h > clipy2) h = clipy2-y;
if (x<clipx1)
{
w += x - clipx1;
x = clipx1;
}
if (y<clipy1)
{
h += y - clipy1;
y = clipy1;
}
#else
if (x+w > VIDXRES) w = VIDXRES-x;
if (y+h > VIDYRES) h = VIDYRES-y;
if (x<0)
@ -388,6 +414,7 @@ void PIXELMETHODS_CLASS::clearrect(int x, int y, int w, int h)
h += y;
y = 0;
}
#endif
if (w<0 || h<0)
return;
@ -395,7 +422,7 @@ void PIXELMETHODS_CLASS::clearrect(int x, int y, int w, int h)
memset(vid+(x+(VIDXRES)*(y+i)), 0, PIXELSIZE*w);
}
void PIXELMETHODS_CLASS::draw_image(pixel *img, int x, int y, int w, int h, int a)
void PIXELMETHODS_CLASS::draw_image(const pixel *img, int x, int y, int w, int h, int a)
{
int startX = 0;
if (!img)
@ -428,6 +455,9 @@ void PIXELMETHODS_CLASS::draw_image(pixel *img, int x, int y, int w, int h, int
img += startX;
for (int i = startX; i < w; i++)
{
#ifdef DO_CLIPCHECK
if (!(x+i<clipx1 || y+j<clipy1 || x+i>=clipx2 || y+j>=clipy2))
#endif
vid[(y+j)*(VIDXRES)+(x+i)] = *img;
img++;
}
@ -450,12 +480,7 @@ void PIXELMETHODS_CLASS::draw_image(pixel *img, int x, int y, int w, int h, int
}
}
void PIXELMETHODS_CLASS::draw_image(const VideoBuffer & vidBuf, int x, int y, int a)
{
draw_image(vidBuf.Buffer, x, y, vidBuf.Width, vidBuf.Height, a);
}
void PIXELMETHODS_CLASS::draw_image(VideoBuffer * vidBuf, int x, int y, int a)
void PIXELMETHODS_CLASS::draw_image(const VideoBuffer * vidBuf, int x, int y, int a)
{
draw_image(vidBuf->Buffer, x, y, vidBuf->Width, vidBuf->Height, a);
}

1
src/graphics/RasterGraphics.cpp
View File

@ -28,6 +28,7 @@ void Graphics::Finalise()
#define VIDXRES WINDOWW
#define VIDYRES WINDOWH
#define PIXELMETHODS_CLASS Graphics
#define DO_CLIPCHECK
#include "RasterDrawMethods.inl"
#undef VIDYRES
#undef VIDXRES

5
src/graphics/Renderer.h
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@ -120,9 +120,8 @@ public:
void clearrect(int x, int y, int width, int height);
void gradientrect(int x, int y, int width, int height, int r, int g, int b, int a, int r2, int g2, int b2, int a2);
void draw_image(pixel *img, int x, int y, int w, int h, int a);
void draw_image(const VideoBuffer & vidBuf, int w, int h, int a);
void draw_image(VideoBuffer * vidBuf, int w, int h, int a);
void draw_image(const pixel *img, int x, int y, int w, int h, int a);
void draw_image(const VideoBuffer * vidBuf, int w, int h, int a);
VideoBuffer DumpFrame();

26
src/gui/game/GameView.cpp
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@ -576,6 +576,11 @@ void GameView::NotifyToolListChanged(GameModel * sender)
else
tempButton = new ToolButton(ui::Point(currentX, YRES+1), ui::Point(30, 18), tool->GetName(), tool->GetIdentifier(), tool->GetDescription());
tempButton->clipRectX = 1;
tempButton->clipRectY = YRES + 1;
tempButton->clipRectW = XRES - 1;
tempButton->clipRectH = 18;
//currentY -= 17;
currentX -= 31;
tempButton->tool = tool;
@ -1014,10 +1019,6 @@ void GameView::updateToolButtonScroll()
for (auto *button : toolButtons)
{
button->Position.X -= offsetDelta;
if (button->Position.X + button->Size.X <= 0 || (button->Position.X + button->Size.X) > XRES - 2)
button->Visible = false;
else
button->Visible = true;
}
// Ensure that mouseLeave events are make their way to the buttons should they move from underneath the mouse pointer
@ -1803,7 +1804,24 @@ void GameView::DoExit()
void GameView::DoDraw()
{
Window::DoDraw();
constexpr std::array<int, 9> fadeout = { { // * Gamma-corrected.
255, 195, 145, 103, 69, 42, 23, 10, 3
} };
auto *g = GetGraphics();
for (auto x = 0U; x < fadeout.size(); ++x)
{
g->draw_line(x, YRES + 1, x, YRES + 18, 0, 0, 0, fadeout[x]);
g->draw_line(XRES - x, YRES + 1, XRES - x, YRES + 18, 0, 0, 0, fadeout[x]);
}
c->Tick();
{
int x = 0;
int y = 0;
int w = WINDOWW;
int h = WINDOWH;
g->SetClipRect(x, y, w, h); // reset any nonsense cliprect Lua left configured
}
}
void GameView::NotifyNotificationsChanged(GameModel * sender)

12
src/gui/game/ToolButton.cpp
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@ -49,6 +49,14 @@ void ToolButton::OnMouseUp(int x, int y, unsigned int button)
void ToolButton::Draw(const ui::Point& screenPos)
{
Graphics * g = GetGraphics();
int x = clipRectX;
int y = clipRectY;
int w = clipRectW;
int h = clipRectH;
if (clipRectW && clipRectH)
{
g->SetClipRect(x, y, w, h); // old cliprect is now in x, y, w, h
}
int totalColour = Appearance.BackgroundInactive.Blue + (3*Appearance.BackgroundInactive.Green) + (2*Appearance.BackgroundInactive.Red);
if (Appearance.GetTexture())
@ -81,6 +89,10 @@ void ToolButton::Draw(const ui::Point& screenPos)
{
g->drawtext(screenPos.X+textPosition.X, screenPos.Y+textPosition.Y, buttonDisplayText, 0, 0, 0, 255);
}
if (clipRectW && clipRectH)
{
g->SetClipRect(x, y, w, h); // apply old clip rect
}
}
void ToolButton::SetSelectionState(int state)

4
src/gui/game/ToolButton.h
View File

@ -18,6 +18,10 @@ public:
void SetSelectionState(int state);
int GetSelectionState();
Tool *tool;
int clipRectX = 0;
int clipRectY = 0;
int clipRectW = 0;
int clipRectH = 0;
};
#endif /* TOOLBUTTON_H_ */

22
src/gui/interface/Panel.cpp
View File

@ -13,7 +13,6 @@ Panel::Panel(Point position, Point size):
ViewportPosition(0, 0),
mouseInside(false)
{
myVid = new pixel[WINDOWW*WINDOWH];
}
Panel::~Panel()
@ -22,7 +21,6 @@ Panel::~Panel()
{
delete children[i];
}
delete[] myVid;
}
void Panel::AddChild(Component* c)
@ -66,12 +64,14 @@ void Panel::RemoveChild(unsigned idx, bool freeMem)
void Panel::Draw(const Point& screenPos)
{
// draw ourself first
XDraw(screenPos);
pixel * lastVid = ui::Engine::Ref().g->vid;
ui::Engine::Ref().g->vid = myVid;
std::fill(myVid, myVid+(WINDOWW*WINDOWH), 0);
int x = screenPos.X;
int y = screenPos.Y;
int w = Size.X;
int h = Size.Y;
ui::Engine::Ref().g->SetClipRect(x, y, w, h); // old cliprect is now in x, y, w, h
// attempt to draw all children
for (size_t i = 0; i < children.size(); ++i)
@ -85,19 +85,13 @@ void Panel::Draw(const Point& screenPos)
children[i]->Position.X + ViewportPosition.X < ui::Engine::Ref().GetWidth() &&
children[i]->Position.Y + ViewportPosition.Y < ui::Engine::Ref().GetHeight() )
{
Point scrpos = /*screenPos + */children[i]->Position + ViewportPosition;
Point scrpos = screenPos + children[i]->Position + ViewportPosition;
children[i]->Draw(scrpos);
}
}
}
ui::Engine::Ref().g->vid = lastVid;
//dst=(pixel *)sdl_scrn->pixels+y*sdl_scrn->pitch/PIXELSIZE+x;
for (int row = 0; row < Size.Y; row++)
{
std::copy(myVid+(row*WINDOWW), myVid+(row*WINDOWW)+Size.X, lastVid+((screenPos.Y+row)*WINDOWW)+screenPos.X);
}
ui::Engine::Ref().g->SetClipRect(x, y, w, h); // apply old cliprect
}
void Panel::Tick(float dt)

1
src/gui/interface/Panel.h
View File

@ -22,7 +22,6 @@ class Component;
public:
friend class Component;
pixel * myVid;
ui::Point InnerSize;
ui::Point ViewportPosition;

15
src/lua/LuaScriptInterface.cpp
View File

@ -3579,6 +3579,7 @@ void LuaScriptInterface::initGraphicsAPI()
{"fillCircle", graphics_fillCircle},
{"getColors", graphics_getColors},
{"getHexColor", graphics_getHexColor},
{"setClipRect", graphics_setClipRect},
{NULL, NULL}
};
luaL_register(l, "graphics", graphicsAPIMethods);
@ -3775,6 +3776,20 @@ int LuaScriptInterface::graphics_getHexColor(lua_State * l)
return 1;
}
int LuaScriptInterface::graphics_setClipRect(lua_State * l)
{
int x = luaL_optinteger(l, 1, 0);
int y = luaL_optinteger(l, 2, 0);
int w = luaL_optinteger(l, 3, WINDOWW);
int h = luaL_optinteger(l, 4, WINDOWH);
luacon_g->SetClipRect(x, y, w, h);
lua_pushinteger(l, x);
lua_pushinteger(l, y);
lua_pushinteger(l, w);
lua_pushinteger(l, h);
return 4;
}
void LuaScriptInterface::initFileSystemAPI()
{
//Methods

1
src/lua/LuaScriptInterface.h
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@ -167,6 +167,7 @@ class LuaScriptInterface: public CommandInterface
static int graphics_fillCircle(lua_State * l);
static int graphics_getColors(lua_State * l);
static int graphics_getHexColor(lua_State * l);
static int graphics_setClipRect(lua_State * l);
void initFileSystemAPI();
static int fileSystem_list(lua_State * l);