Image buttons, file dialogs (win only)

file/CMakeLists.txt

@@ -2,7 +2,8 @@ set(SRCS
   easy_file.cpp
   chunk_file.cpp
   zip_read.cpp
-  file_util.cpp)
+  file_util.cpp
+  dialog.cpp)
 
 set(SRCS ${SRCS})
 

file/dialog.cpp

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <string>
+
+#include "file/dialog.h"
+
+bool OpenFileDialog(const char *title, const char *extension, std::string *filename);
+bool SaveFileDialog(const char *title, const char *extension, std::string *filename);

file/dialog.h

@@ -0,0 +1,73 @@
+#pragma once
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <commdlg.h>
+
+#include <string>
+
+// For desktop operating systems only. Stubbed out on Android.
+// Simplified as this will only be used in utilities / temp code.
+// An false returned means cancel;
+bool OpenFileDialog(const char *title, const char *extension, std::string *filename)
+{
+	OPENFILENAME of;
+	memset(&of, 0, sizeof(of));
+	char buffer[512] = {0};
+	of.lStructSize = sizeof(OPENFILENAME);
+	of.hInstance = 0;
+	of.hwndOwner = GetActiveWindow();
+
+	of.lpstrFilter = "All files (*.*)\0*.*\0\0";
+	of.lpstrDefExt = extension;
+	of.lpstrFile = buffer;
+
+	of.nMaxFile = 511;
+
+	of.Flags = OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
+	if (!GetOpenFileName(&of)) return false;
+	*filename = of.lpstrFile;
+	return true;
+}
+
+bool SaveFileDialog(const char *title, const char *extension, std::string *filename)
+{
+	OPENFILENAME of;
+	memset(&of, 0, sizeof(of));
+	char buffer[512] = {0};
+	of.lStructSize = sizeof(OPENFILENAME);
+	of.hInstance = 0;
+	of.hwndOwner = GetActiveWindow();
+
+	of.lpstrFilter = "All files (*.*)\0*.*\0\0";
+	of.lpstrDefExt = extension;
+	of.lpstrFile = buffer;
+
+	of.nMaxFile = 511;
+
+	of.Flags = OFN_HIDEREADONLY;
+	if (!GetSaveFileName(&of))
+		return false;
+	*filename = of.lpstrFile;
+	return true;
+}
+
+#else
+
+#include <string>
+#include "base/basictypes.h"
+
+bool OpenFileDialog(const char *title, const char *extension, std::string *filename)
+{
+	ELOG("Asked for OpenFileDialog, not present on this platform.");
+	return false;
+}
+
+bool SaveFileDialog(const char *title, const char *extension, std::string *filename)
+{
+	ELOG("Asked for SaveFileDialog, not present on this platform.");
+	return false;
+}
+
+#endif

file/file_util.cpp

@@ -12,7 +12,7 @@
 #include "file/file_util.h"
 #include <sys/stat.h>
 
-bool WriteStringToFile(bool text_file, const std::string &str, const char *filename)
+bool writeStringToFile(bool text_file, const std::string &str, const char *filename)
 {
 	FILE *f = fopen(filename, text_file ? "w" : "wb");
 	if (!f)

native.vcxproj

@@ -107,6 +107,7 @@
     <ClInclude Include="ext\vjson\block_allocator.h" />
     <ClInclude Include="ext\vjson\json.h" />
     <ClInclude Include="file\chunk_file.h" />
+    <ClInclude Include="file\dialog.h" />
     <ClInclude Include="file\easy_file.h" />
     <ClInclude Include="file\file_util.h" />
     <ClInclude Include="file\vfs.h" />
@@ -155,6 +156,7 @@
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
     </ClCompile>
     <ClCompile Include="file\chunk_file.cpp" />
+    <ClCompile Include="file\dialog.cpp" />
     <ClCompile Include="file\easy_file.cpp" />
     <ClCompile Include="file\file_util.cpp" />
     <ClCompile Include="file\zip_read.cpp" />

native.vcxproj.filters

@@ -150,6 +150,9 @@
     <ClInclude Include="midi\midi_input.h">
       <Filter>midi</Filter>
     </ClInclude>
+    <ClInclude Include="file\dialog.h">
+      <Filter>file</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="gfx\gl_debug_log.cpp">
@@ -269,6 +272,9 @@
     <ClCompile Include="midi\midi_input.cpp">
       <Filter>midi</Filter>
     </ClCompile>
+    <ClCompile Include="file\dialog.cpp">
+      <Filter>file</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="gfx">

ui/ui.cpp

@@ -122,6 +122,50 @@ int UIButton(int id, int x, int y, int w, const char *text, int button_align) {
 	return clicked;
 }
 
+int UIImageButton(int id, int x, int y, int w, int image, int button_align) {
+	const int h = 64;
+	if (button_align & ALIGN_HCENTER) x -= w / 2;
+	if (button_align & ALIGN_VCENTER) y -= h / 2;
+	if (button_align & ALIGN_RIGHT) x -= w;
+	if (button_align & ALIGN_BOTTOMRIGHT) y -= h;
+
+	// Check whether the button should be hot, use a generous margin for touch ease
+	if (UIRegionHit(x, y, w, h, 8)) {
+		uistate.hotitem = id;
+		if (uistate.activeitem == 0 && uistate.mousedown)
+			uistate.activeitem = id;
+	}
+
+	// Render button 
+
+	int txOffset = 0;
+	if (uistate.hotitem == id) {
+		if (uistate.activeitem == id) {
+			// Button is both 'hot' and 'active'
+			txOffset = 2;
+		} else {
+			// Button is merely 'hot'
+		}
+	} else {
+		// button is not hot, but it may be active    
+	}
+	ui_draw2d.DrawImage2GridH(themeButtonImage, x, y, x + w);
+	ui_draw2d.DrawImage(image, x + w/2, y + h/2 + txOffset, 0xFFFFFFFF, ALIGN_HCENTER | ALIGN_VCENTER);
+
+	int clicked = 0;
+	// If button is hot and active, but mouse button is not
+	// down, the user must have clicked the button.
+	if (uistate.mousedown == 0 && 
+		uistate.hotitem == id && 
+		uistate.activeitem == id) {
+			clicked = 1;
+	}
+
+	uistate.lastwidget = id;
+	return clicked;
+}
+
+
 int UICheckBox(int id, int x, int y, const char *text, int align, bool *value) {
   const int h = 64;
 	float tw, th;