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-rw-r--r--doc/lua_api.txt17
-rw-r--r--src/client/guiscalingfilter.cpp59
-rw-r--r--src/client/guiscalingfilter.h6
-rw-r--r--src/gui/guiFormSpecMenu.cpp55
-rw-r--r--src/gui/guiFormSpecMenu.h13
5 files changed, 137 insertions, 13 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index 352b04cb0..155da14e3 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -2034,13 +2034,26 @@ Elements
### `background[<X>,<Y>;<W>,<H>;<texture name>]`
-* Use a background. Inventory rectangles are not drawn then.
* Example for formspec 8x4 in 16x resolution: image shall be sized
8 times 16px times 4 times 16px.
### `background[<X>,<Y>;<W>,<H>;<texture name>;<auto_clip>]`
-* Use a background. Inventory rectangles are not drawn then.
+* Example for formspec 8x4 in 16x resolution:
+ image shall be sized 8 times 16px times 4 times 16px
+* If `auto_clip` is `true`, the background is clipped to the formspec size
+ (`x` and `y` are used as offset values, `w` and `h` are ignored)
+
+### `background[<X>,<Y>;<W>,<H>;<texture name>;<auto_clip>;<middle>]`
+
+* 9-sliced background. See https://en.wikipedia.org/wiki/9-slice_scaling
+* Middle is a rect which defines the middle of the 9-slice.
+ * `x` - The middle will be x pixels from all sides.
+ * `x,y` - The middle will be x pixels from the horizontal and y from the vertical.
+ * `x,y,x2,y2` - The middle will start at x,y, and end at x2, y2. Negative x2 and y2 values
+ will be added to the width and height of the texture, allowing it to be used as the
+ distance from the far end.
+ * All numbers in middle are integers.
* Example for formspec 8x4 in 16x resolution:
image shall be sized 8 times 16px times 4 times 16px
* If `auto_clip` is `true`, the background is clipped to the formspec size
diff --git a/src/client/guiscalingfilter.cpp b/src/client/guiscalingfilter.cpp
index 312f93939..3490c47e8 100644
--- a/src/client/guiscalingfilter.cpp
+++ b/src/client/guiscalingfilter.cpp
@@ -167,3 +167,62 @@ void draw2DImageFilterScaled(video::IVideoDriver *driver, video::ITexture *txr,
driver->draw2DImage(scaled, destrect, mysrcrect, cliprect, colors, usealpha);
}
+
+void draw2DImage9Slice(video::IVideoDriver *driver, video::ITexture *texture,
+ const core::rect<s32> &rect, const core::rect<s32> &middle)
+{
+ const video::SColor color(255,255,255,255);
+ const video::SColor colors[] = {color,color,color,color};
+
+ auto originalSize = texture->getOriginalSize();
+ core::vector2di lowerRightOffset = core::vector2di(originalSize.Width, originalSize.Height) - middle.LowerRightCorner;
+
+ for (int y = 0; y < 3; ++y) {
+ for (int x = 0; x < 3; ++x) {
+ core::rect<s32> src({0, 0}, originalSize);
+ core::rect<s32> dest = rect;
+
+ switch (x) {
+ case 0:
+ dest.LowerRightCorner.X = rect.UpperLeftCorner.X + middle.UpperLeftCorner.X;
+ src.LowerRightCorner.X = middle.UpperLeftCorner.X;
+ break;
+
+ case 1:
+ dest.UpperLeftCorner.X += middle.UpperLeftCorner.X;
+ dest.LowerRightCorner.X -= lowerRightOffset.X;
+ src.UpperLeftCorner.X = middle.UpperLeftCorner.X;
+ src.LowerRightCorner.X = middle.LowerRightCorner.X;
+ break;
+
+ case 2:
+ dest.UpperLeftCorner.X = rect.LowerRightCorner.X - lowerRightOffset.X;
+ src.UpperLeftCorner.X = middle.LowerRightCorner.X;
+ break;
+ }
+
+ switch (y) {
+ case 0:
+ dest.LowerRightCorner.Y = rect.UpperLeftCorner.Y + middle.UpperLeftCorner.Y;
+ src.LowerRightCorner.Y = middle.UpperLeftCorner.Y;
+ break;
+
+ case 1:
+ dest.UpperLeftCorner.Y += middle.UpperLeftCorner.Y;
+ dest.LowerRightCorner.Y -= lowerRightOffset.Y;
+ src.UpperLeftCorner.Y = middle.UpperLeftCorner.Y;
+ src.LowerRightCorner.Y = middle.LowerRightCorner.Y;
+ break;
+
+ case 2:
+ dest.UpperLeftCorner.Y = rect.LowerRightCorner.Y - lowerRightOffset.Y;
+ src.UpperLeftCorner.Y = middle.LowerRightCorner.Y;
+ break;
+ }
+
+ draw2DImageFilterScaled(driver, texture, dest,
+ src,
+ NULL/*&AbsoluteClippingRect*/, colors, true);
+ }
+ }
+}
diff --git a/src/client/guiscalingfilter.h b/src/client/guiscalingfilter.h
index a5cd78511..181009551 100644
--- a/src/client/guiscalingfilter.h
+++ b/src/client/guiscalingfilter.h
@@ -48,3 +48,9 @@ void draw2DImageFilterScaled(video::IVideoDriver *driver, video::ITexture *txr,
const core::rect<s32> &destrect, const core::rect<s32> &srcrect,
const core::rect<s32> *cliprect = 0, const video::SColor *const colors = 0,
bool usealpha = false);
+
+/*
+ * 9-slice / segment drawing
+ */
+void draw2DImage9Slice(video::IVideoDriver *driver, video::ITexture *texture,
+ const core::rect<s32> &rect, const core::rect<s32> &middle);
diff --git a/src/gui/guiFormSpecMenu.cpp b/src/gui/guiFormSpecMenu.cpp
index 0514ffbbe..9240dc4c8 100644
--- a/src/gui/guiFormSpecMenu.cpp
+++ b/src/gui/guiFormSpecMenu.cpp
@@ -653,9 +653,8 @@ void GUIFormSpecMenu::parseBackground(parserData* data, const std::string &eleme
{
std::vector<std::string> parts = split(element,';');
- if (((parts.size() == 3) || (parts.size() == 4)) ||
- ((parts.size() > 4) && (m_formspec_version > FORMSPEC_API_VERSION)))
- {
+ if ((parts.size() >= 3 && parts.size() <= 5) ||
+ (parts.size() > 5 && m_formspec_version > FORMSPEC_API_VERSION)) {
std::vector<std::string> v_pos = split(parts[0],',');
std::vector<std::string> v_geom = split(parts[1],',');
std::string name = unescape_string(parts[2]);
@@ -672,16 +671,37 @@ void GUIFormSpecMenu::parseBackground(parserData* data, const std::string &eleme
geom.Y = stof(v_geom[1]) * spacing.Y;
bool clip = false;
- if (parts.size() == 4 && is_yes(parts[3])) {
+ if (parts.size() >= 4 && is_yes(parts[3])) {
pos.X = stoi(v_pos[0]); //acts as offset
pos.Y = stoi(v_pos[1]); //acts as offset
clip = true;
}
+ core::rect<s32> middle;
+ if (parts.size() >= 5) {
+ std::vector<std::string> v_middle = split(parts[4], ',');
+ if (v_middle.size() == 1) {
+ s32 x = stoi(v_middle[0]);
+ middle.UpperLeftCorner = core::vector2di(x, x);
+ middle.LowerRightCorner = core::vector2di(-x, -x);
+ } else if (v_middle.size() == 2) {
+ s32 x = stoi(v_middle[0]);
+ s32 y = stoi(v_middle[1]);
+ middle.UpperLeftCorner = core::vector2di(x, y);
+ middle.LowerRightCorner = core::vector2di(-x, -y);
+ // `-x` is interpreted as `w - x`
+ } else if (v_middle.size() == 4) {
+ middle.UpperLeftCorner = core::vector2di(stoi(v_middle[0]), stoi(v_middle[1]));
+ middle.LowerRightCorner = core::vector2di(stoi(v_middle[2]), stoi(v_middle[3]));
+ } else {
+ warningstream << "Invalid rectangle given to middle param of background[] element" << std::endl;
+ }
+ }
+
if (!data->explicit_size && !clip)
warningstream << "invalid use of unclipped background without a size[] element" << std::endl;
- m_backgrounds.emplace_back(name, pos, geom, clip);
+ m_backgrounds.emplace_back(name, pos, geom, middle, clip);
return;
}
@@ -2514,6 +2534,8 @@ void GUIFormSpecMenu::drawMenu()
core::rect<s32> imgrect(0, 0, spec.geom.X, spec.geom.Y);
// Image rectangle on screen
core::rect<s32> rect = imgrect + spec.pos;
+ // Middle rect for 9-slicing
+ core::rect<s32> middle = spec.middle;
if (spec.clip) {
core::dimension2d<s32> absrec_size = AbsoluteRect.getSize();
@@ -2523,12 +2545,23 @@ void GUIFormSpecMenu::drawMenu()
AbsoluteRect.UpperLeftCorner.Y + absrec_size.Height + spec.pos.Y);
}
- const video::SColor color(255,255,255,255);
- const video::SColor colors[] = {color,color,color,color};
- draw2DImageFilterScaled(driver, texture, rect,
- core::rect<s32>(core::position2d<s32>(0,0),
- core::dimension2di(texture->getOriginalSize())),
- NULL/*&AbsoluteClippingRect*/, colors, true);
+ if (middle.getArea() == 0) {
+ const video::SColor color(255, 255, 255, 255);
+ const video::SColor colors[] = {color, color, color, color};
+ draw2DImageFilterScaled(driver, texture, rect,
+ core::rect<s32>(core::position2d<s32>(0, 0),
+ core::dimension2di(texture->getOriginalSize())),
+ NULL/*&AbsoluteClippingRect*/, colors, true);
+ } else {
+ // `-x` is interpreted as `w - x`
+ if (middle.LowerRightCorner.X < 0) {
+ middle.LowerRightCorner.X += texture->getOriginalSize().Width;
+ }
+ if (middle.LowerRightCorner.Y < 0) {
+ middle.LowerRightCorner.Y += texture->getOriginalSize().Height;
+ }
+ draw2DImage9Slice(driver, texture, rect, middle);
+ }
} else {
errorstream << "GUIFormSpecMenu::drawMenu() Draw backgrounds unable to load texture:" << std::endl;
errorstream << "\t" << spec.name << std::endl;
diff --git a/src/gui/guiFormSpecMenu.h b/src/gui/guiFormSpecMenu.h
index ccd9cb753..b1ca9a48a 100644
--- a/src/gui/guiFormSpecMenu.h
+++ b/src/gui/guiFormSpecMenu.h
@@ -177,6 +177,18 @@ class GUIFormSpecMenu : public GUIModalMenu
}
ImageDrawSpec(const std::string &a_name,
+ const v2s32 &a_pos, const v2s32 &a_geom, const core::rect<s32> &middle, bool clip=false):
+ name(a_name),
+ parent_button(NULL),
+ pos(a_pos),
+ geom(a_geom),
+ middle(middle),
+ scale(true),
+ clip(clip)
+ {
+ }
+
+ ImageDrawSpec(const std::string &a_name,
const v2s32 &a_pos):
name(a_name),
parent_button(NULL),
@@ -191,6 +203,7 @@ class GUIFormSpecMenu : public GUIModalMenu
gui::IGUIButton *parent_button;
v2s32 pos;
v2s32 geom;
+ core::rect<s32> middle;
bool scale;
bool clip;
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 10:25:43 +0000