X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fgui.cpp;h=29f626dec4922bf90620e04bb9ad3da617666de5;hb=5c366a13aeb0ebb8c18a28616732e058466191af;hp=17e522c9b7074ee6ed8ef272450c393f5ec42850;hpb=99461abfcbc562e740a5e0900167ece9a4a5a035;p=virtualjaguar

diff --git a/src/gui.cpp b/src/gui.cpp
index 17e522c..29f626d 100644
--- a/src/gui.cpp
+++ b/src/gui.cpp
@@ -5,10 +5,19 @@
 // by James L. Hammons
 //
 
+#include <string.h>
+#include <dirent.h>
+#include <SDL.h>
 #include "types.h"
 #include "tom.h"
+#include "font1.h"
 #include "gui.h"
 
+// Private function prototypes
+
+uint32 CountROMFiles(char * path);
+
+
 void InitGUI(void)
 {
 }
@@ -17,7 +26,198 @@ void GUIDone(void)
 {
 }
 
-void DrawText(uint16 * screen, uint32 x, uint32 y, const char * string)
+//
+// Render the backbuffer to the primary screen surface
+//
+void BlitBackbuffer(void)
 {
-	uint32 pitch = TOMGetSDLScreenPitch();
+	extern SDL_Surface * surface, * mainSurface;
+	extern int16 * backbuffer;
+
+	if (SDL_MUSTLOCK(surface))
+		while (SDL_LockSurface(surface) < 0)
+			SDL_Delay(10);
+
+	memcpy(surface->pixels, backbuffer, tom_getVideoModeWidth() * tom_getVideoModeHeight() * 2);
+
+	if (SDL_MUSTLOCK(surface))
+		SDL_UnlockSurface(surface);
+
+	SDL_Rect srcrect, dstrect;
+	srcrect.x = srcrect.y = 0, srcrect.w = surface->w, srcrect.h = surface->h;
+	dstrect.x = dstrect.y = 0, dstrect.w = surface->w, dstrect.h = surface->h;
+	SDL_BlitSurface(surface, &srcrect, mainSurface, &dstrect);
+    SDL_Flip(mainSurface);      
+}
+
+//
+// Draw text at the given x/y coordinates. Can invert text as well.
+//
+void DrawText(int16 * screen, uint32 x, uint32 y, bool invert, const char * text, ...)
+{
+	char string[4096];
+	va_list arg;
+
+	va_start(arg, text);
+	vsprintf(string, text, arg);
+	va_end(arg);
+
+	uint32 pitch = TOMGetSDLScreenPitch() / 2;		// Returns pitch in bytes but we need words...
+	uint32 length = strlen(string), address = x + (y * pitch);
+
+	for(uint32 i=0; i<length; i++)
+	{
+		uint32 fontAddr = (uint32)string[i] * 64;
+
+		for(uint32 yy=0; yy<8; yy++)
+		{
+			for(uint32 xx=0; xx<8; xx++)
+			{
+				if ((font1[fontAddr] && !invert) || (!font1[fontAddr] && invert))
+					*(screen + address + xx + (yy * pitch)) = 0xFE00;
+				fontAddr++;
+			}
+		}
+
+		address += 8;
+	}
+}
+
+//
+// Very very crude GUI file selector
+//
+bool UserSelectFile(char * path, char * filename)
+{
+	extern int16 * backbuffer;
+	uint32 numFiles = CountROMFiles(path);
+
+	if (numFiles == 0)
+		return false;
+
+	char * names = (char *)malloc(numFiles * 2048);
+
+	if (names == NULL)
+	{
+		WriteLog("Could not allocate memory for %u files!\nAborting!\n", numFiles);
+		return false;
+	}
+
+	int i = 0;
+	DIR * dp = opendir(path);
+	dirent * de;
+
+	while ((de = readdir(dp)) != NULL)
+	{
+		char * ext = strrchr(de->d_name, '.');
+		if (ext != NULL)
+			if (strcmpi(ext, ".zip") == 0 || strcmpi(ext, ".jag") == 0)
+				strcpy(&names[i++ * 2048], de->d_name);
+	}
+
+	closedir(dp);
+
+	// Main GUI selection loop
+
+	uint32 cursor = 0, startFile = 0;
+
+	if (numFiles > 1)	// Only go GUI if more than one possibility!
+	{
+		bool done = false;
+		uint32 limit = (numFiles > 24 ? 24 : numFiles);
+		SDL_Event event;
+
+		while (!done)
+		{
+			while (SDL_PollEvent(&event))
+			{
+				// Draw the GUI...
+				memset(backbuffer, 0x11, tom_getVideoModeWidth() * tom_getVideoModeHeight() * 2);
+
+				for(uint32 i=0; i<limit; i++)
+				{
+					bool invert = (cursor == i ? true : false);
+					char buf[41];
+					// Guarantee that we clip our strings to fit in the screen...
+					memcpy(buf, &names[(startFile + i) * 2048], 38);
+					buf[38] = 0;
+					DrawText(backbuffer, 0, i*8, invert, " %s ", buf);
+				}
+
+				BlitBackbuffer();
+
+				if (event.type == SDL_KEYDOWN)
+				{
+					SDLKey key = event.key.keysym.sym;
+
+					if (key == SDLK_DOWN)
+					{
+						if (cursor != limit - 1)	// Cursor is within its window
+							cursor++;
+						else						// Otherwise, scroll the window...
+						{
+							if (cursor + startFile != numFiles - 1)
+								startFile++;
+						}
+					}
+					if (key == SDLK_UP)
+					{
+						if (cursor != 0)
+							cursor--;
+						else
+						{
+							if (startFile != 0)
+								startFile--;
+						}
+					}
+					if (key == SDLK_RETURN)
+						done = true;
+					if (key == SDLK_ESCAPE)
+					{
+						WriteLog("GUI: Aborting VJ by user request.\n");
+						return false;						// Bail out!
+					}
+				}
+			}
+		}
+	}
+
+	strcpy(filename, path);
+	// Potential GPF here: If length of dir is zero, then this will cause a page fault!
+	if (path[strlen(path) - 1] != '/')
+		strcat(filename, "/");
+	strcat(filename, &names[(cursor + startFile) * 2048]);
+	free(names);
+
+	return true;
+}
+
+//
+// Count # of possible ROM files in the current directory
+//
+uint32 CountROMFiles(char * path)
+{
+	uint32 numFiles = 0;
+	DIR * dp = opendir(path);
+
+	if (dp == NULL)
+	{
+		WriteLog("VJ: Could not open directory \"%s\"!\nAborting!\n", path);
+		return 0;
+	}
+	else
+	{
+		dirent * de;
+
+		while ((de = readdir(dp)) != NULL)
+		{
+			char * ext = strrchr(de->d_name, '.');
+			if (ext != NULL)
+				if (strcmpi(ext, ".zip") == 0 || strcmpi(ext, ".jag") == 0)
+					numFiles++;
+		}
+
+		closedir(dp);
+	}
+
+	return numFiles;
 }